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The 2012 Civic Si is powered by a new 2.4-liter inline 4-cylinder engine that is the largest and most powerful of any Civic introduced in the United States. The dual overhead cam (DOHC) engine is an all-aluminum design that uses four valves per cylinder (16 valves total), a high-performance version of the i-VTEC® system and a specially tuned high-volume intake manifold. The Civic Si produces 201 horsepower – up four horsepower from the 2.0-liter engine it replaces. The i-VTEC® “intelligent” valve-control system
, new friction-reducing technologies and extensive weight control measures helps the Civic Si deliver exhilarating acceleration, improved fuel economy and low exhaust emissions. The new larger displacement engine in the Civic Si delivers peak power at a more accessible 7000 rpm compared to the previous Si engine’s 7800 rpm power peak. The engine’s increased displacement results in a substantial 22-percent increase in peak torque. The new 170 lb-ft rating occurs at just 4400 rpm, 1700 rpm lower than the previous engine’s 139 lb-ft at 6100 rpm. Even with its increase in displacement, horsepower and torque, the 2012 Civic Si has an estimated EPA city rating of 22 mpg (up 1 mpg compared to the 2011 Civic Si) and increases highway fuel economy with a rating of 31 mpg (up 2 mpg compared to the 2011 Civic Si). In addition, the Civic Si engine meets strict Ultra-Low Emission Vehicle (ULEV-2) emissions standards. The Honda Civic Si is available exclusively with a 6-speed manual transmission with a short-throw shifter. Designed to be compact and lightweight, the 6-speed has also been engineered to provide quick and precise shift action. The Civic Si also includes a clutch with a torsion mechanism that enhances refinement in terms of engagement and feel.

Design And Spesifications :

Engine TypeIn-Line 4-CylinderIn-Line 4-CylinderIn-Line 4-Cylinder
Engine Block/Cylinder HeadAluminum-AlloyAluminum-AlloyAluminum-Alloy
Displacement (cc)179817981798
Horsepower @ rpm (SAE net)140 @ 6500140 @ 6500140 @ 6500
Torque (lb-ft @ rpm)128 @ 4300128 @ 4300128 @ 4300
Redline (rpm)670067006700
Bore and Stroke (mm)81 x 87.381 x 87.381 x 87.3
Compression Ratio10.6:110.6:110.6:1
Valve Train16-Valve SOHC i-VTEC®16-Valve SOHC i-VTEC®16-Valve SOHC i-VTEC®
Multi-Point Fuel InjectionStandardStandardStandard
Drive-by-Wire™ Throttle SystemStandardStandardStandard
Front-Wheel DriveStandardStandardStandard
Eco Assist™ System[1] StandardStandardStandard
CARB Emissions RatingULEV-2/PZEV[2] ULEV-2/PZEV[2] ULEV-2/PZEV[2] 
Direct Ignition System with ImmobilizerStandardStandardStandard
100K +/- Miles No Scheduled Tune-Ups[3] StandardStandardStandard
5-Speed Manual TransmissionStandardStandard
Gear Ratios: 1st: 3.143, 2nd: 1.870, 3rd: 1.235, 4th: 0.949, 5th: 0.727, Reverse: 3.308, Final Drive: 4.29
Compact 5-Speed Automatic TransmissionAvailableAvailableStandard
Gear Ratios: 1st: 2.666, 2nd: 1.534, 3rd: 1.022, 4th: 0.721, 5th: 0.525, Reverse: 1.957, Final Drive: 4.44
Unit-Body ConstructionStandardStandardStandard
MacPherson Strut Front SuspensionStandardStandardStandard
Multi-Link Rear SuspensionStandardStandardStandard
Stabilizer Bar (mm, front/rear)17.0 / 11.017.0 / 11.017.0 / 11.0
Motion-Adaptive Electric Power-Assisted Rack-and-Pinion Steering (EPS)StandardStandardStandard
Steering Wheel Turns, Lock-to-Lock3.13.13.1
Steering Ratio16.116.116.1
Turning Diameter, Curb-to-Curb (ft)35.435.435.4
Power-Assisted Ventilated Front Disc/Rear Drum Brakes (in, front/rear)10.3 / 7.910.3 / 7.9
Power-Assisted Ventilated Front Disc/Solid Rear Disc Brakes (in, front/rear)10.3 / 10.2
Wheels15" with Full Covers15" with Full Covers16" Alloys
All-Season TiresP195 / 65 R15 89HP195 / 65 R15 89HP205 / 55 R16 89H
Compact Spare TireT135 / 80 D15 99MT135 / 80 D15 99MT135 / 80 D15 99M
Exterior Measurements
Wheelbase (in)105.1105.1105.1
Length (in)177.3177.3177.3
Height (in)56.556.556.5
Width (in)
Track (in, front/rear)59.0 / 59.959.0 / 59.959.0 / 59.9
Curb Weight (lbs, MT/AT)2608 / 26722641 / 2705NA / 2765 (EX) NA / 2787 (EX w/Navi) NA / 2773 (EX-L) NA / 2795 (EX-L w/Navi)
Weight Distribution
(%, front/rear, MT)
60 / 4060 / 40
Weight Distribution
(%, front/rear, AT)
61 / 3961 / 3961 / 39
Interior Measurements
Headroom (in, front/rear)39.0 / 37.139.0 / 37.137.9 / 36.2
Legroom (in, front/rear)42.0 / 36.242.0 / 36.242.0 / 36.2
Shoulder Room (in, front/rear)56.6 / 53.356.6 / 53.356.6 / 53.3
Hiproom (in, front/rear)50.5 / 51.450.5 / 51.450.5 / 51.4
Cargo Volume (cu ft)12.512.512.5 (EX) 12.1 (EX-L)
Passenger Volume (cu ft)94.694.692.1
Seating Capacity555
EPA Mileage Estimates[4] / Fuel
5-Speed Manual (City/Highway/Combined)28 / 36 / 3128 / 36 / 31
5-Speed Automatic (City/Highway/Combined)28 / 39 / 3228 / 39 / 3228 / 39 / 32
Fuel (gal)
Required FuelRegular UnleadedRegular UnleadedRegular Unleaded
3-Point Seat Belts at all Seating PositionsStandardStandardStandard
Front 3-Point Seat Belts with Automatic Tensioning SystemStandardStandardStandard
Driver's and Front Passenger's Seat Belt ReminderStandardStandardStandard
Dual-Stage, Multiple-Threshold Front Airbags (SRS)StandardStandardStandard
Front Side Airbags with Passenger-Side Occupant Position Detection System (OPDS)StandardStandardStandard
Side Curtain AirbagsStandardStandardStandard
Advanced Compatibility Engineering™ (ACE™) Body StructureStandardStandardStandard
Vehicle Stability Assist™ (VSA®) with Traction Control[5] StandardStandardStandard
Brake AssistStandardStandardStandard
Anti-Lock Braking System (ABS)StandardStandardStandard
Electronic Brake Distribution (EBD)StandardStandardStandard
Tire Pressure Monitoring System (TPMS)[6] StandardStandardStandard
Daytime Running Lights (DRL)StandardStandardStandard
Side-Impact Door BeamsStandardStandardStandard
Lower Anchors and Tethers for CHildren (LATCH): Lower Anchors (2nd-Row Outboard), Tether Anchors (2nd-Row All)StandardStandardStandard
Child-Proof Rear Door LocksStandardStandardStandard
Emergency Trunk ReleaseStandardStandardStandard
Exterior Features
One-Touch Power Moonroof with Tilt FeatureStandard
Integrated Rear-Window AntennaStandardStandardStandard
Security System with Remote Entrywith Trunk Releasewith Trunk Release
Manually Operated Side MirrorsBlack
Body-Colored Power Side MirrorsStandardHeated (EX-L)
2-Speed/Intermittent Windshield WipersStandardStandard
Variable Intermittent Windshield WipersStandard
Impact-Absorbing Body-Colored BumpersStandardStandardStandard
Multi-Reflector Halogen Headlights with Auto OffStandardStandardwith Auto-On/Off (EX-L)
Body-Colored Door HandlesBlackStandardStandard
Comfort & Convenience
Air Conditioning with Air-Filtration SystemStandardStandard
Honda Satellite-Linked Navigation System™ with Voice Recognition and FM Traffic[7] Available
Bluetooth® HandsFreeLink®[8] Standard
Power WindowsStandard
Power Windows with Auto-Up/Down Driver's WindowStandardStandard
Power Door Locks with Auto-Lock FeatureStandardStandard
Illuminated Driver's Window and Door Lock ControlsStandardStandard
Cruise ControlStandardStandard
Leather-Wrapped Steering WheelEX-L
Illuminated Steering Wheel-Mounted ControlsCruise / Audio / i-MIDCruise / Audio / Phone / i-MID / Navi (available)
Tilt and Telescopic Steering ColumnStandardStandardStandard
Beverage HoldersFrontFrontFront and Rear
Center Console with Armrest and Storage CompartmentStandardStandardStandard
Door-Pocket Storage Bins (front/rear)StandardStandardStandard
Passenger-Side Seatback PocketStandard
Coin TrayStandardStandardStandard
Remote Fuel Filler Door ReleaseStandardStandardStandard
Remote Trunk Release with LockStandardStandardStandard
Headlights-On ReminderStandardStandardStandard
Driver's and Front Passenger's Vanity MirrorsStandardStandardStandard
Map LightsStandardStandard
Rear-Seat ArmrestStandard
Rear-Seat Heater DuctsStandardStandardStandard
Floor MatsStandardStandard
Driver's FootrestStandardStandardStandard
12-Volt Power OutletFrontFrontFront and Center Console
Rear Window Defroster with TimerStandardStandardStandard
Cargo Area LightStandardStandardStandard
Leather-Trimmed InteriorEX-L
Heated Front SeatsEX-L
Driver's Seat with Manual Height AdjustmentStandardStandardStandard
Adjustable Front Seat-Belt AnchorsStandardStandardStandard
Reclining Front SeatbacksStandardStandardStandard
Adjustable Head RestraintsStandardStandardStandard
Fold-Down Rear SeatbackStandardStandard60/40 Split
Audio Systems
160-Watt AM/FM//CD Audio System with 4 SpeakersStandard
160-Watt AM/FM//CD Audio System with 6 SpeakersStandard
XM® Radio[9] with Navigation
USB Audio Interface[10] StandardStandard
MP3/Auxiliary Input JackStandardStandard
MP3/Windows Media® Audio (WMA) Playback Capability[11] StandardStandard
Radio Data System (RDS)StandardStandard
Speed-Sensitive Volume Control (SVC)StandardStandard
12-Volt Battery Charging System IndicatorStandardStandardStandard
ABS IndicatorStandardStandardStandard
Airbag System IndicatorStandardStandardStandard
Blue Backlit GaugesStandardStandardStandard
Brake System IndicatorStandardStandardStandard
Coolant Temperature IndicatorsStandardStandardStandard
Cruise Control IndicatorsStandardStandard
Digital SpeedometerStandardStandardStandard
Door and Trunk Open IndicatorsStandardStandardStandard
DRL IndicatorStandardStandardStandard
ECON ButtonStandardStandardStandard
ECON Mode IndicatorStandardStandardStandard
Electric Power Steering (EPS) IndicatorStandardStandardStandard
Fuel Level IndicatorStandardStandardStandard
Headlight-On IndicatorStandardStandardStandard
High-Beam IndicatorStandardStandardStandard
Immobilizer System IndicatorStandardStandardStandard
Instant Fuel Economy IndicatorStandardStandardStandard
Low Tire-Pressure IndicatorStandardStandardStandard
Low-Fuel IndicatorStandardStandardStandard
Low-Oil Pressure IndicatorStandardStandardStandard
Maintenance Minder IndicatorStandardStandardStandard
Malfunction IndicatorStandardStandardStandard
Passenger-Side Side Airbag-Off IndicatorStandardStandardStandard
Seat Belt Reminder IndicatorStandardStandardStandard
Security System IndicatorStandardStandard
Shift Lever Position Indicator5AT5AT5AT
System Message IndicatorStandardStandard
TPMS IndicatorStandardStandardStandard
Turn Signal/Hazard IndicatorsStandardStandardStandard
Two-Tier Instrument PanelStandardStandardStandard
VSA System and Off IndicatorsStandardStandardStandard
Washer Fluid Level IndicatorStandardStandardStandard
intelligent Multi-Information Display (i-MID)
Average Fuel Economy IndicatorStandardStandardStandard
Average Speed IndicatorStandardStandard
Bluetooth® HandsFreeLink®[8] Standard
Customizable Door Lock SettingsStandardStandard
Customizable Interior Light SettingsStandardStandard
Customizable Language SettingsStandardStandard
Customizable Screen Color SettingsStandardStandard
Customizable Wallpaper SettingsStandardStandard
Digital Fuel-Mileage IndicatorsStandardStandard
Digital Odometer and Digital Trip Meters (2)StandardStandardStandard
Elapsed Time IndicatorStandardStandard
Exterior Temperature IndicatorStandard
FM Trafficwith Navigation
Maintenance Minder™ SystemStandardStandardStandard
Miles-to-Empty IndicatorStandardStandardStandard
Turn-By-Turn Directionswith Navigation
Welcome ScreenStandardStandard
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