Published On: Oct 1, 2017 Printed On: Jan 16, 2019

2018 Honda Accord Press Kit ­ PowertrainOct 1, 2017The 10th generation 2018 Accord takes an entirely new approach to performance with its two new direct­injectedVTEC Turbo® 4­cylinder engines with dual VTC – a 1.5­liter 16­valve inline­4 and a 2.0­liter 16­valve DOHC inline­4. Both new turbocharged engines produce peak torque across a broad range of engine speed (RPM), deliveringsmooth and virtually lag­free power for exceptional throttle response and power delivery in all driving conditions.

The 1.5­liter turbo is mated to a Honda continuously variable automatic transmission (CVT) with G­Shift Control or,in Sport trim, to either a CVT or a short­throw 6­speed manual transmission (6MT). The new 2.0­liter turbo, sharingmuch of its design with the 2017 Civic Type­R engine, can be mated to a smooth, responsive Honda­designed 10­speed automatic, the first of its kind for a front­wheel­drive car, or, in Sport trim, to the 10AT or a short­throw 6­speed manual.

New 2.0L DOHC VTEC Turbo Engine with New 10­speed Automatic Transmission

The two new automatic transmissions take greater advantage of available torque while maximizing quietness andefficiency during highway cruising. The redesigned CVT has an 11­percent lower ratio compared to the previousgeneration version for more powerful launch performance, while the new 10AT is 22 lbs. lighter, with a 43­percentlower first gear and a 17­percent taller top gear compared to the previous generation Accord's 6­speed automatic.

The new gas­engine powertrains are joined by the third generation of Honda's Intelligent Multi­Mode Drive (iMMD)two­motor hybrid technology. The new hybrid powertrain features a 2.0­liter Atkinson­cycle engine with improvedthermal efficiently, now at 40 percent (up from 38.9 percent on the 2017 Accord Hybrid), the highest for any mass­

produced Honda engine. The engine is paired with two Honda­developed electric motors that are the first drivemotors in the world to use permanent magnets containing no heavy rare­earth metals. As before, the Accord two­motor system operates without the need for a conventional automatic transmission.

Additionally, a new, more compact intelligent power unit (IPU) containing the hybrid battery pack and its controlsystems is now mounted under the rear floor instead of in the trunk. This packaging provides the same 16.7 cu. ft.of trunk space as its gasoline­only counterpart, and preserves the flexibility and utility of a 60/40­split and foldingrear seat, standard on the Accord Hybrid EX and above trims.

Key Powertrain Features

Engines

New VTEC Turbo® 1.5­liter, DOHC direct­injected inline­4 engine*

192 horsepower at 5500 rpm (SAE net)192 lb.­ft. torque at 1,600­5,000 rpm (SAE net)Dual VTC and VTEC® valvetrainLow inertia Mono­scroll turbo system with electric wastegateComputer­controlled Direct Injection (DI) with multi­hole fuel injectors10.3:1 compression ratioLightweight, high rigidity steel crankshaft"4­into­2" exhaust manifoldSodium­filled exhaust valvesForged steel connecting rodsDrive­by­Wire™ throttle systemMaintenance Minder™ system optimizes service intervals100,000 +/­ miles tune­up intervalRegular Unleaded fuel recommended

New VTEC Turbo® 2.0­liter, DOHC direct­injected inline­4 engine*

252 horsepower at 6,500 rpm (SAE net)273 lb.­ft. torque at 1,500­4000 rpm (SAE net)Dual VTC and VTEC valvetrainLow inertia mono­scroll turbo system with electric wastegateComputer­controlled Direct Injection (DI) with high­flow fuel injectors9.8:1 compression ratioSuper lightweight, high rigidity steel crankshaft"4­into­1" exhaust manifold integrated into cylinder head castingSodium­filled exhaust valvesForged steel connecting rodsDrive­by­Wire™ throttle systemMaintenance Minder™ system optimizes service intervals100,000 +/­ miles tune­up intervalRegular Unleaded fuel recommended

Two­Motor Intelligent Multi­Mode Drive (i­MMD) Hybrid powertrain

2.0­liter, DOHC, i­VTEC® Atkinson­cycle inline­4 engineEngine output: 143 horsepower at 6200 rpmEngine output: 129 lb.­ft. torque at 3500 rpmi­VTEC® (Variable Valve Timing and Lift Electronic Control) + Electric VTC

Computer­controlled port fuel injection with multi­hole fuel injectors13.5:1 compression ratioDrive­by­Wire™ Throttle SystemMaintenance Minder™ system optimizes service intervals100,000+/­ miles engine tune­up intervalRegular Unleaded fuel recommendedElectric motor output: 181 peak horsepower at 5,000 to 6,000 rpmTotal system horsepower: 212Eight­year/100,000­mile or ten­year/150,000­mile Li­Ion battery limited warranty, depending on the state ofpurchase/registration

Emissions/Fuel Economy Ratings

Emissions Ratings1.5­liter turbo: LEV3­ULEV50; LEV3­SULEV302.0­liter turbo: LEV3­ULEV50; LEV3­SULEV30Hybrid: LEV3­SULEV30

EPA fuel­economy ratings (city/highway/combined)1.5­liter turbo with 6MT (Sport trim): 26/35/30 mpg1.5­liter turbo with CVT (LX, EX & EX­L Trims): 30/38/33 mpg1.5­liter turbo with CVT (Sport & Touring trims): 29/35/31

Anticipated EPA Fuel Economy Ratings (city/highway – targets only, not final)2.0­liter turbo with 6MT(Sport trim): 22/32 mpg2.0­liter turbo with 10AT (EX­L trim): 23/34 mpg2.0­liter turbo with 10AT (Sport & Touring trims): 22/32 mpg2.0­liter Hybrid: TBA

Based on 2018 EPA fuel­economy ratings. Use for comparison purposes only. Your mileage will vary dependingon how you drive and maintain your vehicle, battery pack age/condition (Hybrid only), driving conditions and otherfactors.

Transmissions

6­speed Manual (1.5­liter and 2.0­liter Accord Sport)Continuously Variable Transmission (Accord 1.5­liter turbo)New 10­speed automatic (Accord 2.0 turbo)

Engine Architecture and Features

Turbocharged 1.5­Liter In­Line 4 Cylinder The new DOHC 1.5­liter engine in the Accord is a further evolution of the powerplant first introduced in the 2016Civic and later applied to the 2017 CR­V. With direct injection, a low­inertia Mono scroll turbo with electric waste­gate and dual Variable Timing Control (VTC), the turbocharged powerplant delivers more horsepower and torquethan before.

Power output is increased in part by a new "4­into­2" exhaust manifold that improves the flow of exhaust gas to theturbo (see below). Peak output of 192 horsepower (hp) at 5,500 rpm and 192 lb.­ft. of torque from 1,600 to 5,000,compared to 185 hp at 6,400 rpm and 181 lb.­ft. at 3,900 rpm on the previous Accord's normally aspirated 2.4­literengine.

The Accord 1.5­liter turbo is rated by the EPA at 30/38/33 mpg when equipped with the available CVTtransmission (except Sport trim), and 26/35/30 mpg city/highway/combined when equipped with the standard 6­speed manual transmission, improvements of up to 3/2/3 mpg for the CVT, and 3/3/4 mpg for the 6MT, depending

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on trim.

Based on 2018 EPA fuel­economy ratings. Use for comparison purposes only. Your mileage will vary dependingon how you drive and maintain your vehicle, driving conditions and other factors.

Cylinder Head and Valvetrain The direct­injected 1.5­liter 4­cylinder turbocharged engine has a lightweight, low­pressure die­cast aluminum alloycylinder head with exhaust manifold cast directly into the cylinder head, eliminating the need for a separateexhaust manifold. For improved fuel efficiency and responsiveness, the manifold has a "4­into­2" design; theengine's eight exhaust valves are grouped in two sets of four, each group with a separate exhaust manifold andexit port to the turbocharger cast into the cylinder head, which helps smooth exhaust flow to the turbocharger formore efficient operation and better low­rpm response.

A low­friction, silent­chain drives dual overhead cams and four valves per cylinder. The cam drive is maintenancefree throughout the life of the engine. To help further reduce weight, new thin­wall hollow camshafts are used.

To benefit fuel efficiency, emissions and power, the turbo engine utilizes sodium filled exhaust valves. A hollowchamber within the valve contains sodium that is cooled by the exhaust port cooling jacket. Since the chamberreaches close to the valve head, the sodium helps to cool the entire valve. Since the valve is internally cooled, itdoesn't need the enriched fuel mixture that was generally used in turbo engines to help cool the exhaust valve. Theresultant leaner mixture reduces emissions, increases fuel efficiency and helps increase power.

The cylinder head includes small 12­millimeter (M12) sparkplugs, down from the more common 14­millimeter(M14) size, to save space and weight. The head also includes direct­injection multi­hole fuel injectors with a smalldiameter bore. Higher­pressure direct injection optimizes fuel atomization, allowing for more efficient combustion.To provide a high­tumble intake charge that further enhances combustion efficiency, both the intake port and pistoncrown have special designs.

The 1.5­liter DOHC 16­valve VTEC Turbo engine uses an advanced valve control system to combine high poweroutput with high fuel efficiency and low emissions. The system combines intake and exhaust Variable TimingControl (dual VTC), which continuously adjusts the intake and exhaust camshaft phase, with Variable Valve Timingand Lift Electronic Control (VTEC), which changes valve lift, timing and duration of the exhaust valves. In thisapplication, the increased valve lift from VTEC operation varies to improve gas scavenging at low speed, partthrottle conditions, as well as higher speed, full throttle operation, helping to improve performance across theengine speed range.

The cam timing is varied based on input from sensors that monitor rpm, timing, throttle opening, cam position andexhaust air­fuel ratio. The result is increased fuel efficiency and lower emissions.

Turbocharged 2.0­Liter In­Line 4 Cylinder Assembled in Honda's Anna, Ohio engine plant using domestic and globally­sourced parts, the Accord's availableDOHC 2.0­liter engine shares much of its design with the race­bred 2017 Civic Type R and has the highest torqueever offered in an Accord. Compared to the 2.0­liter turbo in the Civic Type R, the Accord's 2.0­liter engine uses aturbocharger with a smaller, low­inertia turbine for improved low­rpm boost response. With a maximum of 20.8 psiof boost, the Accord's 2.0­liter powerplant peak output is 252 hp (SAE net) at 6,500 rpm and 273 lb.­ft. of torque(SAE net) from 1,500 to 4,000 rpm.

With 33­percent greater displacement than the Accord's standard 1.5­liter turbocharged engine, the 2.0­literpowerplant delivers a maximum increase of 60 horsepower and 81 lb.­ft. of torque. Compared to the 3.5­liternormally aspirated V6 it replaces, the 2.0­liter engine has less peak horsepower (252 vs. 278) but greater peaktorque (273 lb.­ft. of torque from 1,500 to 4,000 rpm, vs. 252 lb.­ft. at 4,900 rpm). With peak torque available at a

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much lower engine rpm, responsiveness and acceleration are notably enhanced. The 2.0­liter turbo also offersmuch broader power delivery, holding a torque advantage over the V6 that spans the entire operating rangebetween 1200 and 4800 rpm – the engine rpm range that is typically used the most.

The turbocharged Accord 2.0­liter turbo is designed to operate on Regular unleaded fuel. EPA fuel economyratings are pending at this writing.

Cylinder Head and Valvetrain The direct­injected Accord 2.0­liter 4­cylinder VTEC Turbo engine has a lightweight, low­pressure die­castaluminum alloy DOHC cylinder head. With exhaust ports cast directly into the cylinder head, the use of a separateexhaust manifold is eliminated, reducing engine weight and simplifying assembly. The manifold is also liquid cooledto help keep heat in check and has a "4­into­1" design for improved fuel efficiency and responsiveness.

A low­friction, silent chain drives dual overhead cams and four valves per cylinder. The cam drive is maintenancefree for the life of the engine. To further reduce weight, thin­wall hollow camshafts are used.

To benefit fuel efficiency, emissions and power, the turbo engine utilizes sodium­filled exhaust valves. A hollowchamber within the valve contains sodium that is cooled by the exhaust port cooling jacket. Since the chamber isclose to the valve head, the sodium helps to cool the entire valve; and since the valve is internally cooled, it doesn'tneed the enriched fuel mixture that is generally used in turbo engines to help cool exhaust valves. The resultantleaner mixture reduces emissions increases fuel efficiency and increases power.

The Accord's 2.0­liter DOHC 16­valve VTEC Turbo engine uses an advanced valve control system to combine highpower output with high fuel efficiency and low emissions. The system combines intake and exhaust Variable TimingControl (dual VTC), which continuously adjusts the intake and exhaust camshaft phase, with Variable Valve Timingand Lift Electronic Control (VTEC), which changes valve lift, timing and duration of the exhaust valves.

The cam timing is varied based on input from sensors that monitor rpm, timing, throttle opening, cam position andexhaust air­fuel ratio. The result is increased fuel efficiency and lower emissions.

The cylinder head includes small 12­millimeter (M12) sparkplugs, down from the more common 14­millimeter(M14) size, to save space and weight. The head also includes direct­injection multi­hole wide­range fuel injectorswith a small­diameter bore. Higher­pressure direct injection optimizes fuel atomization, allowing for more efficientcombustion. To provide a high­tumble intake charge that further enhances combustion efficiency, both the intakeport and piston crown have special designs.

High­Flow Exhaust System The Accord 2.0­liter engine features a specially designed high­flow exhaust system with a large­diameter centralpipe with resonator that splits into dual exhaust silencers and dual outlets. The system is engineered to offer adistinctive exhaust note under acceleration, coupled with quiet cruising at low power settings.

Common Turbocharged Engine Features

Dual Variable Timing Control (Dual VTC) Dual VTC adjusts cam timing for optimal balance of power and efficiency. Based on a range of sensor information,VTC adjusts an oil control valve which acts as a hydraulic actuator that can vary the position of each camshaftsprocket relative to the cam it drives. Under light loads, valve overlap can be increased to reduce pumping lossesand improve fuel efficiency. When engine speed is low and engine load is large, such as during initial acceleration,the amount of overlap is increased to boost the scavenging effect, which improves torque and responsiveness.When engine speed is high and engine load is also high, such as during full­throttle acceleration, the amount ofvalve overlap is reduced to increase engine output by improving both intake and scavenging.

Cylinder Block and Crankshaft The Accord's turbocharged inline 4­cylinder engines have a lightweight die­cast aluminum block with reinforcedmain bearing caps to minimize weight. Centrifugally cast iron cylinder sleeves provide long­lasting durability. Eachjournal on the crankshaft is micropolished to reduce operating friction.

Pistons and Connecting Rods The Accord's turbocharged engines have pistons with "cavity­shaped" crowns that help maintain stable combustionand contribute to improved efficiency. The lightweight pistons have a carefully optimized skirt design to minimizereciprocating weight, which minimizes vibration and increases operating efficiency. The pistons are cooled by oiljets directed at the underside of each piston crown. Special cooling channels in the pistons also help keepoperating temperatures in check. Ion­plated piston rings help reduce friction for greater operating efficiency.Lightweight, high­strength steel connecting rods are heat­forged in one piece and then "crack separated" to createa lighter and stronger rod with an optimally fitted bearing cap.

ECON and SPORT Modes Every 2018 Accord is equipped with a green ECON button located on the center console near the shift lever. Whenthe button is pushed to activate ECON mode, several operating characteristics of the vehicle are modified forenhanced fuel efficiency. The Drive­by­Wire™ throttle system provides more gradual response, and to saveadditional energy, the climate control's fan speeds are lowered incrementally and other climate control systemcharacteristics are altered based on the conditions. Another push of the ECON button reverts all systems to theirnormal mode.

Touring trims of the Accord 1.5 and 2.0­liter models are available with SPORT mode, which is selectable via abutton on the center console. SPORT mode alters a range of chassis features, including suspension dampers,steering assist level, Agile Handling Assist, as well as powertrain features, including Drive By Wire, shift mapping(with automatic transmission), and Active Sound Control (ASC). With SPORT mode selected, the Accord takes ona more aggressive, fun­to­drive edge (see Chassis section for additional detail).

Direct Injection System Both turbocharged powerplants feature a direct­injection system that enables increased torque across the engine'sfull operating range along with higher fuel efficiency. The system features a compact, high­pressure, direct­injectionpump that allows both high fuel flow and pulsation suppression, while variable pressure control optimizes injectoroperation. Multi­hole injectors deliver fuel directly into each cylinder (not to the intake port, as in conventional portfuel injection designs), allowing for more efficient combustion.

The multi­hole injectors help create the ideal stoichiometric fuel/air mixture in the cylinders for good emissionscontrol. Theoretically, a stoichiometric mixture has just enough air to completely burn the available fuel. Based onthe operating conditions, the direct­injection system alters its function for best performance. Upon cold enginestartup, fuel is injected into the cylinders on the compression stroke. This creates a weak stratified charge effectthat improves engine start­up and reduces exhaust emissions before a normal operating temperature is reached.

Once the engine is fully warmed up, for maximum power and fuel efficiency fuel is injected during the intake stroke.This helps create a more homogeneous fuel/air mix in the cylinder that is aided by the high­tumble intake portdesign. This improves volumetric efficiency, and the cooling effect of the incoming fuel improves anti­knockperformance.

Low Inertia Mono Scroll Turbo System with Electric Wastegate Both turbocharged Accord powerplants feature mono scroll IHI turbochargers with small­diameter, low­inertiaturbines for maximum responsiveness. The mono scroll housing design helps the turbo build boost even atrelatively small throttle openings and low engine rpm. The electrically actuated wastegate allows boost pressure tobe precisely controlled.

A large air low­restriction intercooler is positioned low in the front of the car where it receives unobstructed airflowwhen the vehicle is in motion. The intercooler helps reduce the temperature of air entering the engine, increasingits density for greater performance. Intake air travels from the air filter, to the turbo compressor, on to theintercooler, then to the engine's intake ports. To reduce weight, the turbo system is plumbed with rigid, lightweightresin composite inlet pipes to carry intake air to and from the intercooler.

Advanced Transmissions

6­Speed Manual Transmission Accord Sport models offer available 6­speed manual transmissions (6MT) with either the 1.5­liter or 2.0­literturbocharged engines. The two manual transmissions are engineered to match the displacement and torque outputof the engine they are paired with. Both units offer smooth and precise shift feel and great efficiency, making themthe perfect complement to the Accord's sporting side. A constant­mesh helical reverse gear mechanismsignificantly reduces noise when reverse is used. A reverse lockout feature prevents the transmission fromaccidentally being shifted into reverse while the car is moving forward.

Continuously Variable Transmission (CVT) Accord 1.5­liter offers the responsiveness and efficiency of an available Continuously Variable Transmission (CVT).The Continuously Variable Transmission (CVT) has smooth and predictable gear ratio transitions and excellentacceleration matched with efficient low­rpm cruising. A wide ratio spread results in strong acceleration performancecoupled with reduced engine rpm at high road speeds. The redesigned CVT has an 11­percent lower ratiocompared to the previous­generation version for more powerful launch performance.

G­Design Shift Feature The Accord CVT is designed to provide the optimum gear ratio for the driving conditions, and to offer a morenatural driving feel than some previous CVT transmissions that may have something of a disconnected "rubber­band" feel compared to a conventional automatic transmission.

The Accord CVT has a special G­design shift logic that is designed to offer more immediate acceleration responsethan other CVT designs. When abruptly applying power from a steady­state cruising speed, the CVT immediatelysends power to the drive wheels while simultaneously adjusting the gear ratio (seamlessly and progressivelydownshifting) to smoothly bring the engine to its horsepower peak in a linear way.

During full throttle acceleration, G­Design shift logic employs stepped ratios as the vehicle speed increases. Thishelps give the transmission a more "connected" feel as the engine rpm and vehicle speed increase together. Thisstepped operation also improves acceleration performance incrementally.

CVT Automatic Modes The transmission can be operated in three different fully automatic forward modes with the console­mountedstraight­gate shifter. The D mode is ideal for most driving situations, and combines fuel efficiency with smoothoperation and responsive power when needed. The S mode is for more performance­oriented driving and featuresmore aggressive transmission mapping to keep engine rpm higher for greater acceleration and response, whilealso providing greater engine braking. The L mode is ideal for situations when additional engine braking is desired,such as in mountainous driving.

10­Speed Automatic Transmission (10AT) Accord 2.0­liter models are available with a new, Honda­developed 10­speed automatic transmission (10AT), thefirst of its kind in the Accord's segment. Engineered for high efficiency with low internal inertia and an exceptionallywide ratio range, the 10AT maximizes the Accord's performance and fuel efficiency. Compared to the previous 6­speed automatic, the 10AT is 22 lbs. lighter and has a 68 percent wider overall ratio range with a 43 percent lowerfirst gear and a 17 percent taller top gear.

The 10AT is designed to be lightweight and compact. It features four planetary gear sets that work together toprovide an exceptionally wide ratio spread of 10.139:1 compared to 6.041:1 on the previous­generation Accord's 6­speed unit. The 10­speed also has substantially faster upshift and downshift performance than the previousgeneration 6­speed transmission. For greater responsiveness, the 10­speed transmission can make 4­gear directdownshifts: from 10th to 6th, or from 7th to 3rd.

To maximize fuel efficiency and minimize interior noise, the transmission's 10th gear is exceptionally tall, resultingin quiet and relaxed cruising rpm.

Shift­By­Wire Gear Selector In the 2018 Accord with 10­speed automatic transmission, the conventional shift lever is replaced with a fullyelectronic, shift­by­wire gear selector. Park, Neutral and Drive are selected with the push of a button. Reverse isselected by pulling back a dedicated switch. Indicator lights on or next to the buttons indicate the mode selected.As an added safety feature, if the vehicle is brought to a stop in Drive or Reverse, the system will automaticallyselect Park if the driver's seatbelt is unbuckled and the driver's door is opened. A steering wheel­mounted paddleshifter system lets the driver take manual control of transmission gear selection.

Common CVT/10AT Transmission Features

Automatic Modes Both the Accord CVT and 10­speed automatic transmissions can be operated in two different fully automaticmodes. The D (or "Drive") mode is ideal for most driving situations, and combines fuel efficiency with smoothoperation and responsive power when needed. The CVT's S mode and the 10AT SPORT mode are meant formore demanding driving, and feature more aggressive shift mapping to keep engine rpm higher for greateracceleration and pulling power.

When in the D mode (optimized for normal driving), the transmission incorporates an advanced Grade LogicControl System, Shift Hold Control and Cornering G Shift Control – all of which reduce unwanted shifting and gearhunting. The result is smart transmission operation that optimizes fuel efficiency and keeps the transmission in theappropriate gear for driving conditions, generating excellent performance and smooth operation.

While ascending or descending hills, Grade Logic Control alters the transmission's shift schedule to reduce shiftfrequency and improve speed control. The transmission ECU continually measures throttle position, vehicle speedand acceleration/deceleration to determine when the vehicle is on a hill. The shift schedule is then adjusted –during ascents to hold the transmission in lower gears to boost climbing power, and during descents to providegreater engine braking.

Shift Hold Control keeps the transmission in its current (lower) gear ratio during aggressive driving, as in the caseof decelerating at a corner entry. Shift Hold Control leaves the chassis undisturbed by eliminating excess shiftingand ensures that power will be more immediately available (without a downshift) at the corner exit. Cornering GShift Control monitors the speed of each rear wheel independently to determine when the Accord is turning. Whenthe system detects a sufficient speed differential between the rear wheels, it will suppress any unwanted upshifts.This prevents the transmission from upshifting during a corner, which could upset the chassis balance thusrequiring downshifting again at the corner exit when the throttle is applied.

Paddle Shifters Touring trims and Sport trims with automatic transmission for both the 1.5­ and 2.0­liter engines feature dualsteering wheel­mounted paddle shifters. Particularly useful in mountainous terrain or during spirited driving, thepaddles give the driver greater control over transmission operation. On long downgrades, the driver can commanddownshifts with the paddles that allow increased engine braking to reduce the load on the brakes and help controlthe Accord's downhill speed.

Paddle Shifter Operation in Drive Mode While in Drive mode, special transmission logic programming allows the use of the steering­wheel­mounted paddleshifters. When the driver operates the paddle shifters, the transmission responds to the driver's shift command andthen returns to its normal fully automatic mode if further paddle shift inputs are not made within a few secondsdepending upon driving conditions. This special logic makes it easy for the driver to command a quick downshiftwithout leaving the convenience of Drive mode. This temporary manual mode can be cancelled at the driver's willby continued operation of the right­side paddle until the transmission resumes "Drive."

Paddle Shifter Operation in Sequential Mode By selecting the "S" position with the shifter (CVT) or pressing the SPORT button (10AT), Sequential mode isengaged. This mode offers automatic operation with more aggressive shift mapping. A pull on either of the paddleshifters places the transmission in fully manual mode until another mode of operation is selected. A digital displayin the instrument cluster indicates which gear the transmission is in.

In the CVT transmission, a double­kick­down feature lets the driver command a sporty double downshift – such asfrom fifth to third gear. By pulling on the left downshift paddle twice in rapid succession, the transmission will dropdirectly to the chosen lower gear ratio. With the 10AT, the Drive­by­Wire™ throttle system also creates a "blip" ofthe throttle to help match gear speeds while downshifting.

To prevent harm to the powertrain when the transmission is paddle shifted by the driver (including during double­kick­down shifts), the system will inhibit potentially damaging shifts. As an added safety measure, the ElectronicControl Unit (ECU) can also cut off fuel to the engine to prevent over­revving. If fuel cutoff is insufficient to preventengine over­revving, as may be possible when the vehicle is on a steep downhill, the transmission willautomatically upshift to prevent damage. On downshifts, the transmission will not execute a driver command thatwill over­rev the engine.

For improved stop­and­go performance and to help prevent "lugging" the engine, the transmission willautomatically downshift to first gear even though the transmission has been left in a higher gear, (except in secondgear launch with 10AT) as the vehicle comes to a stop.

Cooperative Control Both shift performance and smoothness are improved by cooperative control between the Drive­by­Wire™ throttlesystem and the electronically controlled transmission. The engine is throttled by the engine management systemduring upshifts and downshifts so the function of the engine and transmission can be closely choreographed forfaster, smoother shifting. As a result, the peak g­forces (or "shift shock") are reduced significantly during upshiftsand downshifts.

Manual Transmission Gear Ratio Comparison

Gear 2017 Accord 2.4L 6MT

2018 Accord 1.5T 6MT

2018 Accord 2.0T 6MT

1st 3.643 3.643 3.625

2nd 2.080 2.080 2.115

3rd 1.361 1.361 1.529

4th 1.024 1.024 1.125

5th 0.830 0.830 0.848

6th 0.686 0.686 0.686

Reverse 3.673 3.673 3.758

Final Reduction Ratio 4.105 4.105 3.842

Continuously Variable Transmission Gear Ratio Comparison

Gear Ratio (X:1) 2017 Accord 2.4L CVT 2018 Accord 1.5L T CVT

Forward 2.645~0.405 2.645~0.405

Reverse 1.859~1.265 1.859~1.265

Final Reduction Ratio 3.238 3.238

Automatic Transmission Gear Ratio Comparison

Gear 2017 Accord V6 6AT 2018 Accord 2.0T 10AT

1st 3.359 5.340

2nd 2.095 3.329

3rd 1.485 2.224

4th 1.065 1.625

5th 0.754 1.327

6th 0.556 1.018

7th – 0.796

8th – 0.665

9th – 0.591

10th – 0.527

Reverse 2.269 4.045

Final Reduction Ratio 3.941 3.55

Accord Hybrid

Third­Generation Intelligent Multi­Mode Drive (i­MMD) Two­Motor Hybrid System The 2018 Accord Hybrid's third­generation i­MMD Two­motor hybrid system is a highly efficient powertrain thatselects the optimal drive operation under a wide range of driving conditions to combine fun­to­drive performancewith outstanding fuel efficiency. The new hybrid powertrain utilizes a 2.0­liter Atkinson­cycle engine with 40 percentthermal efficiency, up from 38.9­percent in the previous generation Accord Hybrid, and the highest thermalefficiency of any mass­produced Honda engine.

The engine is paired with two electric motors – a propulsion motor and a generator/starter motor. These newmotors are the first drive motors in the world to use magnets containing no heavy rare­earth metals, a new Honda­patented design that reduces magnet cost and weight.

Detailed energy management for each component, as controlled by the Power Control Unit (PCU), enables thissystem to make the best use of both the electric propulsion motor and the gasoline engine to provide seamlesslysmooth and responsive performance while garnering top­class EPA fuel economy ratings in the midsize hybridsedan class.

To help maximize efficiency on the road, the Accord Hybrid seamlessly shifts between three distinct driveoperations: EV Drive (100­percent electric motor), Hybrid Drive (electric motor and gasoline engine [driving thegenerator motor]) and Engine Drive (gasoline engine), utilizing power from the Atkinson­cycle i­VTEC® 4­cylinderengine and the electric motors to suit the driving conditions moment to moment.

EV Drive Operation All­electric drive EV Drive operation occurs when starting from a stop, during light cruising and acceleration, andwhen braking. The gasoline engine is off when the i­MMD is in EV Drive mode and is decoupled from the drivetrainto reduce friction.

Hybrid Drive Operation The electric propulsion motor alone powers the front wheels, as the gasoline engine (decoupled from the drivewheels) powers the electric­generator motor, which in turn provides power to the battery pack. This allows the gasengine­generator motor combo to supplement the battery by providing added electrical power to the propulsionmotor or, alternatively, to charge the battery. In this type of operation, the system works as a "series hybrid." Theelectric propulsion motor offers crisp acceleration, and can reach maximum torque almost instantaneously, thanksto electrical power that can be supplied from both the gas engine­powered motor/generator and the battery.

Engine Drive Operation When cruising at medium to high speeds, the high­efficiency Atkinson­cycle i­VTEC gasoline engine providespropulsion via a high capacity lock­up clutch, which connects the generator motor (always linked to the engine)and the electric drive motor, effectively sending motive power directly from the engine to the drive wheels. In thistype mode, the system works as a "parallel hybrid" where both the gasoline engine and, when required – forinstance upon quick acceleration – the electric propulsion motor, both provide power to the wheels. The i­MMDpowertrain operates without the use of a conventional transmission.

2.0­liter Inline 4­cylinder Atkinson­Cycle Engine The 2018 Accord Hybrid's third­generation i­MMD system utilizes a 2.0­liter DOHC i­VTEC 4­cylinder Atkinson­cycle engine that develops a peak 143 horsepower at 6200 rpm and 129 lb.­ft. of torque at 3500 rpm. Advances inengine control tuning together with other technologies combine to create excellent power characteristics,exceptional fuel efficiency and very low exhaust emissions. Key contributors to the improved thermal of efficient ofthe engine include improved exhaust gas recirculation and reductions in operating friction. This clean­runningengine meets LEV3­ AT­PZEV (SULEV30)/Interim Tier3 Bin30 emission standards, while contributing to the AccordHybrid's total system output of 212 horsepower.

Since the gasoline engine can be decoupled from the rest of the hybrid powertrain, it only operates as needed.Depending on the state of battery charge and other parameters, the engine will automatically shut off duringdeceleration and when the vehicle is at a stop or operating under battery power. When needed, the gasolineengine restarts automatically, without action from the driver.

Engine Block, Crankshaft and Pistons The engine has a displacement of 1,993cc. Cast­in iron cylinder liners provide long­lasting durability. Each journalon the forged­steel crankshaft is micro­polished to reduce internal friction. To improve smoothness throughout therpm range and help lower noise levels, the Accord Hybrid is fitted with an internal balancer unit. Consisting of apair of chain­driven counter­rotating shafts located in the oil pan, the balancing system helps quell the inherentsecond­order harmonic vibrations that are normally associated with inline 4­cylinder engines.

The 2.0­liter engine has cylinder bores offset by 6.0 mm from the crankshaft to help reduce piston­sliding friction.This gives the connecting rods a more favorable angle during each power stroke, which reduces side loading onthe pistons and, in turn, improves efficiency. The lightweight pistons have a carefully optimized skirt design tominimize reciprocating weight, and reduced weight minimizes vibration and increases operating efficiency.

Cylinder Head and Valvetrain The Accord Hybrid engine has a lightweight cylinder head that is made of pressure­cast aluminum alloy. A silentchain drives dual overhead cams and four valves per cylinder. The cam drive is maintenance free throughout thelife of the engine.

To help boost fuel efficiency and power, the engine has a 34­degree included angle between the intake andexhaust valves. The narrow valve angle decreases the surface­to­volume ratio and helps create a flatter, morecompact combustion chamber that reduces unburned hydrocarbon emissions. This combustion chamber shapeand the precise control enables a high compression ratio of 13.5:1, yet the engine still operates on regularunleaded fuel.

VTEC Valve Control System The Accord Hybrid's 2.0­liter DOHC 16­valve i­VTEC engine uses an advanced valve­control system to combinehigh power output with high fuel efficiency and low emissions. The system combines E­VTC (Electronic VariableTiming Control), which continuously adjusts the intake camshaft phase, with Variable Valve Timing and LiftElectronic Control (VTEC), which changes the lift profile, timing and duration of the intake valves' operation.

High­Efficiency Dual Bed Catalytic Converter A key contributor to the Accord Hybrid's excellent emission performance is a single dual­bed catalytic converter.The converter mounts directly to the front of the cylinder head, close coupled for fast activation after the engine isstarted. It uses a thin­wall design that increases internal reaction area and improves efficiency. A high­efficiencyexhaust system and the dual­bed, high­density catalytic converter help the Accord engine meet stringent LEV3­AT­PZEV(SULEV30)/Interim Tier3 Bin30 standards, which require reduced greenhouse gases compared to lowerstandards.

Heat Recovery Device The heat recovery device contributes to the third­generation i­MMD's efficiency by helping to reduce power­robbingfriction, particularly during cold­weather startup and initial operation, prior to engine warmup. Located downstreamon the exhaust system, the heat recovery device uses hot exhaust gas to warm engine coolant quicker, especiallyduring cold weather conditions. This brings the engine up to normal operating temperature quicker, reducinginternal friction and allowing the i­MMD to operate in electric mode earlier. This helps improve fuel efficiency duringcold weather operation.

Electric Motors The 2018 Accord Hybrid uses two new­generation electric motors, a propulsion motor that drives the wheels and agenerator motor that produces electricity, both of which have been upgraded from the previous generation i­MMD.The Honda­developed electric motors that are the first permanent magnet drive motors in the world to use magnetscontaining no heavy rare­earth metals. The propulsion motor is rated at 181 horsepower and 232 lb.­ft. of torque.

When in regenerative mode, the propulsion motor converts the kinetic energy of the decelerating vehicle intoelectrical energy to recharge the battery. Its operation is seamlessly coordinated with the Accord Hybrid's electric­servo braking system. (See the Chassis section for more information.) A separate generator motor is driven by thegasoline engine to generate electric energy to drive the propulsion motor when the vehicle is operating in HybridDrive Mode. This generator motor can also restart the gasoline engine when the vehicle is in idle­stop mode.

Intelligent Power Unit (IPU) The Accord Hybrid's completely reworked intelligent Power unit (IPU) is now 32­percent more compact and hasbeen repositioned under the rear seat base, instead of in the trunk, behind the rear seatback as in the previousgeneration Accord Hybrid. This repositioning means that the Accord Hybrid offers the same roomy trunk utility and60/40 split­folding rear seatback versatility of the non­hybrid Accord models. The IPU packages a reconfigured Li­Ion battery pack that powers the Accord Hybrid's electric propulsion motor. Improved battery control systems andrevised battery chemistry allow the new battery to operate over a broader state­of­charge range for improvedefficiency.

The battery pack is recharged by the propulsion motor operating in regenerative braking mode, and by thegenerator motor, which is powered by the gasoline engine. Battery temperature is controlled by a fan system thatpulls air from the interior of the vehicle via vents located beneath the rear seat bottom. The battery pack is coveredby a special warranty that covers defects in material and workmanship for eight­years/100,000­miles or ten­year/150,000 miles depending on the state of purchase/registration.

Power Control Unit (PCU) The Power Control Unit (PCU), which dictates the power management strategy of the two­motor hybrid system,including motor power and battery recharge, now includes the DC/DC converter and is mounted in the enginecompartment.

Drive Force Transfer Just like the previous model, the Accord Hybrid is not equipped with a conventional mechanical transmission.Instead, motive force transfer is accomplished through the interaction of the Accord Hybrid's gasoline engine and

two electric motors. Coordinated by the IPU, this form of drive force transfer offers smooth and predictableacceleration matched with efficient low­rpm highway cruising when the gasoline engine is in operation. Gasolineengine shutdown is seamlessly integrated into the operation of the Accord Hybrid when appropriate.

The drive force transfer system operates without the need for a torque converter, mechanical pulley or belt. Itinstead uses two motors for driving and generating power. The system is optimally and rapidly able to control bothengine and electric motor rotation in order to deliver higher fuel efficiency and quicker engine response in eachdriving mode.

When cruising at mid­ or high­speeds in the high­efficiency range of the engine, a lock­up clutch is engaged,connecting the drive motor to the generator motor to transmit engine torque directly to the drive wheels asefficiently as possible. In EV Drive operation, when the battery­powered drive motor is used for either accelerationor regenerative braking, a clutch disengages the stopped gasoline engine from the drivetrain to eliminate efficiencyloss from mechanical friction in the engine.

Improving efficiency and reducing weight and size, the drive force transfer system of the second­generation i­MMDintegrates the torque limiter within the flywheel.

Deceleration Selector Paddles In the Accord Hybrid, new steering wheel­mounted selector paddles allow the driver to select between four levelsof regenerative braking performance. The right paddle adds regenerative braking (displayed visually on theinstrument panel) and the left paddle reduces regenerative braking.

Common Features for All Engines

Drive­by­Wire™ Throttle System The Accord's Drive­by­Wire™ throttle system replaces a conventional throttle cable with smart electronics that"connect" the accelerator pedal to a throttle valve inside the throttle body. The result is less under­hood clutter andlower weight, as well as quicker and more accurate throttle actuation. Moreover, a specially programmed "gain"rate between the throttle pedal and engine offers improved drivability and optimized engine response to suitspecific driving conditions.

Honda's Drive­by­Wire™ throttle system evaluates the current driving conditions by monitoring throttle pedalposition, throttle valve position, engine speed (rpm) and road speed. This information is used to define the throttlecontrol sensitivity that gives the Accord's throttle pedal a predictable and responsive feel that meets driverexpectations.

Close­Coupled Catalyst All Accord engines have their exhaust manifold cast directly into the aluminum alloy cylinder head to reduce weightand complexity, and to position each primary catalytic converter as close as possible to the combustion chambers.A high­efficiency converter mounts directly to the exhaust port of the cylinder head for extremely rapid converteractivation after engine startup.

Friction Reducing Technology All the Accord's engines make use of friction­reducing technologies designed to improve engine efficiency. Theouter skirts of lightweight aluminum pistons feature a low­friction coating applied in a unique pattern. The result isreduced overall friction as the pistons move within the cylinder bores. Plateau honing further lowers the frictionlevel between the pistons and the cylinders by creating an ultra­smooth surface. Plateau honing is a 2­stagemachining process that uses two grinding processes instead of the more conventional single honing process. Thisalso enhances the long­term wear characteristics of the engine. Low viscosity oil (0W­20) also reduces friction.Other contributors to overall operating efficiency are a special 2­stage oil pump relief valve, low­friction oil seals,special low­drag piston ring design, low­friction cam chain and a lightweight crankshaft.

Emissions Certifications

Accord 1.5­liter turbo: LEV3­ULEV50; LEV3­SULEV30Accord 2.0­liter turbo: LEV3­ULEV50; LEV3­SULEV30Accord Hybrid: LEV3­SULEV30

All three Accord engines are engineered for low emissions, and are certified to their respective level of emissionsperformance for 120,000 miles.

100,000+/­ Mile Tune­up Intervals The Accord's three available powerplants require no scheduled maintenance for 100,000+/­ miles or more, otherthan periodic inspections and normal fluid and filter replacements. The first tune­up includes water pumpinspection, valve adjustment, and the installation of new spark plugs.

Maintenance Minder™ System To eliminate unnecessary service stops while ensuring that the vehicle is properly maintained, the Accord has aMaintenance Minder™ system that continually monitors the vehicle's operating condition. When maintenance isrequired, the driver is alerted via a message on the Driver Information Interface (DII).

The Maintenance Minder™ system monitors operating conditions such as oil and coolant temperature along withengine speed to determine the proper service intervals. Depending on operating conditions, oil change intervalscan be extended to a maximum of 10,000 miles, potentially sparing the owner considerable expense andinconvenience over the life of the vehicle. The owner­resettable system monitors all normal service parts andsystems, including engine oil and filter, tire rotation, air­cleaner, transmission fluid, spark plugs, engine coolant,brake pads and more. To reduce the potential for driver distraction, maintenance alerts are presented only whenthe ignition is first turned on, not while driving.

Powertrain Feature Comparisons

Feature 2017 Accord 2.4 2018 Accord 1.5L Turbo

Engine Type In­Line 4­Cylinder Turbocharged In­Line 4­Cylinder

Displacement (cc) 2356 1498

Horsepower @ rpm (SAE net)

185 @ 6400 192 @ 5500

Torque (lb.­ft. @ rpm SAE net)

181 @ 3900 192 @ 1600­5000

Bore and Stroke (mm) 87 x 99.1 73 x 89.5

Compression Ratio 11.1:1 10.3:1

Direct Ignition • •

Valvetrain 16­Valve DOHC i­VTEC® 16­Valve DOHC VTEC

Fuel Delivery Direct Direct

Drive­by­Wire™ Throttle System • •

Transmission 6­Speed Manual, CVT 6­Speed Manual, CVT

Front­Wheel Drive • •

Feature 2017 Accord V6 2018 Accord 2.0 Turbo

Engine Type V6 Turbocharged In­Line 4­Cylinder

Displacement (cc) 3471 1996

Horsepower @ rpm (SAE net)

278 @ 6200 252 @ 6500

Torque (lb.­ft. @ rpm SAE net)

252 @ 4900 273 @ 1600­4000

Bore and Stroke (mm) 89 x 93 86 x 85.9

Compression Ratio 10.5:1 9.8:1

Direct Ignition • •

Valvetrain 24­Valve SOHC i­VTEC® 16­Valve DOHC VTEC

Fuel Delivery Multi­Point Direct

Drive­by­Wire™ Throttle System • •

Transmission 6­Speed Automatic 6­Speed Manual, 10­Speed Automatic

Front­Wheel Drive • •

Feature 2017 Accord Hybrid 2018 Accord Hybrid

Engine Type In­Line 4­Cylinder In­Line 4­Cylinder

Displacement (cc) 1993 1993

Horsepower @ rpm (SAE net)

143 @ 6200 143 @ 6200

Torque (lb.­ft. @ rpm SAE net)

129 @ 4000 129 @ 3500

Bore and Stroke (mm) 81 x 96.7 81 x 96.7

Compression Ratio 13.0:1 13.5:1

Direct Ignition • •

Valvetrain 16­Valve DOHC i­VTEC®, AtkinsonCycle

16­Valve DOHC i­VTEC®, AtkinsonCycle

Fuel Delivery Multi­Point Multi­Point

Hybrid Electric Drive Motor AC Synchronous Permanent­Magnet AC Synchronous Permanent­Magnet

Horsepower @ rpm (SAEnet)

181 @ 5,000­6,000 181 @ 5,000­6,000

Torque @ rpm (SAE net) 232 lb.­ft. @ 0­2,000 232 lb.­ft. @ 0­2,000

Total System Horsepower @rpm

212 @ 6,200 212 @ 6200

Hybrid Battery Lithium­Ion Lithium­Ion

Drive­by­Wire™ ThrottleSystem

• •

Transmission None (uses Drive Force TransferSystem)

None (uses Drive Force TransferSystem)

Front­Wheel Drive • •

Accord Powertrain Specifications

Feature 2018 Accord 1.5L Turbo 2018 Accord 2.0L Turbo 2018 Accord Hybrid

Engine Type Turbocharged In­Line 4­Cylinder

Turbocharged In­Line 4­Cylinder

In­Line 4­Cylinder

Displacement (cc) 1498 1996 1993

Horsepower @ rpm (SAE net)

192 @ 5500 252 @ 6500 143 @ 6200

Torque (lb.­ft. @ rpm SAE net)

192 @ 1600­5000 273 @ 1500­4000 129 @ 3500

Bore and Stroke (mm) 73 x 89.5 86 x 85.9 81 x 96.7

Compression Ratio 10.3:1 9.8:1 13.5:1

Maximum Boost (psi) 20.2 20.8 NA

Fuel Injection Direct Direct Multi­Point

Valvetrain 16­Valve DOHC w/dualVTC and VTEC

16­Valve DOHC w/dualVTC and VTEC

16­Valve DOHC i­VTECw/intake VTC

Drive­by­Wire™ ThrottleSystem

• • •

Low­Inertia MONOTurbocharger

• • —

Hybrid Electric DriveMotor

— — AC SynchronousPermanent­Magnet

Horsepower @ rpm — — 181@5,000

Torque @ rpm — — 232 lb.­ft.@0­2,000

Total SystemHorsepower @ rpm

— — 212 @ 6200

Hybrid Battery — — Lithium­Ion

100K +/­ Miles NoScheduled Tune­Ups

• • •

Accord Turbo Transmissions

Feature

LX EX EX­L

EX­L

Navi

Touring Sport1.5

Sport2.0

6­Speed Manual • •

Gear Ratios: 1st: 3.643 2nd: 2.080, 3rd: 1.361, 4th: 1.024, 5th: 0.830, 6th: 0.686, Reverse: 3.673, Final Drive:4.105 (1.5Liter) 1st: 3.625, 2nd: 2.115, 3rd: 1.529, 4th: 1.125, 5th: 0.848, 6th: 0.686, Reverse: 3.758, Final Drive: 3.842 (2.0Liter)

Continuously Variable Transmission (CVT) (1.5 Liter)

• • • • • •

Gear Ratios: Forward: 2.645 0.405, Reverse: 1.859 1.265, Final Drive: 3.238

10­Speed Automatic Transmission with Shift­By­Wire (SBW) and paddle shifters (2.0 Liter)

• • •

Gear Ratios: 1st: 5.340, 2nd: 3.329, 3rd: 2.224, 4th: 1.625, 5th: 1.327, 6th: 1.018, 7th: 0.796, 8th: 0.665, 9th: 0.591, 10th:0.527, Reverse: 4.045, Final Drive: 3.550

Fuel Economy and Emissions Ratings

Ratings

2018 Accord1.5 Turbo with

6MT

2018 Accord1.5 Turbo with

CVT

2018 Accord2.0 Turbo with

6MT

2018 Accord2.0 Turbo with

10AT

2018Accord Hybrid

EPA FuelEconomyRatings (city /highway/combined)

26/35/30 (Sport) 30/38/33 (LX,EX, EX­L)

29/35/31 (Sport,Touring)

City/Hwy Targets Only 22/32 (Sport)

City/Hwy Targets Only 23/34 (EX­L) 22/32 (Spt.,

Trg.)

TBA

Recommen­ded fuel

Regularunleaded 87

octane

Regularunleaded 87

octane

Regularunleaded 87

octane

Regularunleaded 87

octane

Regularunleaded 87

octane

CARBemissionsrating

LEV3­ULEV50;LEV3­SULEV30

LEV3­SULEV30 LEV3­SULEV30 LEV3­SULEV30 LEV3­SULEV30

Based on 2018 EPA fuel­economy ratings. Use for comparison purposes only. Your mileage will vary dependingon how you drive and maintain your vehicle, battery pack age/condition (Hybrid only), driving conditions and otherfactors.

Honda North America | 1919 Torrance Boulevard | Torrance, CA 90501

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