Honda Car Forum

Will this car require premium fuel? Or can you use regular?I believe all si's require premium

ALL Honda Civics use 87 octane gas!

honda civic si sedan shares it's engine with the Si coupe. the coupe uses premium so the sedan should also. check out the si coupe on honda's website.

ENGINEERING: ENGINEERING TRIM LEVEL Si Engine Type In-Line 4-Cylinder Engine Block/Cylinder Head Aluminum-Alloy Displacement (cc) 1998 Horsepower @ rpm (SAE net, Rev 8/04) 197 @ 7800 Torque (lb.-ft. @ rpm) 139 @ 6100 Redline (rpm) 8000 Bore and Stroke (mm) 86 x 86 Compression Ratio 11.0:1 Valve Train 16-Valve DOHC i-VTEC® Stainless Steel Exhaust Manifold Standard Multi-Point Fuel Injection Standard Drive-by-Wire™ Throttle System Standard Front-Wheel Drive Standard CARB Emissions Rating LEV-2 Direct Ignition System with Immobilizer Standard 100,000-Miles-or-More Tune-Up Interval* Standard ENGINEERING: TRANSMISSIONS TRIM LEVEL Si Close-Ratio 6-Speed Manual Transmission Standard Helical Limited-Slip Differential Standard ENGINEERING: BODY/SUSPENSION/CHASSIS TRIM LEVEL Si Unit-Body Construction Standard MacPherson Strut Front Suspension Standard Multi-Link Rear Suspension Standard Stabilizer Bar (mm., front/rear) 28.0 (solid) / 17.0 Power-Assisted Rack-and-Pinion Steering Electric Steering Wheel Turns, Lock-to-Lock 2.65 Steering Ratio 13.62 Turning Diameter, Curb-to-Curb (ft.) 35.6 Power-Assisted Ventilated Front Disc/Solid Rear Disc Brakes 11.8 / 10.2 Wheels 17" Alloys All-Season Tires P215 / 45 R17 87V Michelin® Pilot® Exalto® PE2™ Summer Tires (available) 215 / 45 ZR17 91W Compact Spare Tire Standard you may see whole Specifications

The Si requires premium. You can use regular, but the performance and mileage will be lower.