| ENGINEERING | MUGEN Si Sedan | Si Sedan |
| Engine Type | In-Line 4-Cylinder | In-Line 4-Cylinder |
| Engine Block/Cylinder Head | Aluminum-Alloy | Aluminum-Alloy |
| Displacement (cc) | 1998 | 1998 |
| Horsepower @ rpm (SAE net) | 197 @ 7800 | 197 @ 7800 |
| Torque (lb-ft. @ rpm) | 139 @ 6100 | 139 @ 6100 |
| Redline (rpm) | 8000 | 8000 |
| Bore and Stroke (mm) | 86 x 86 | 86 x 86 |
| Compression Ratio | 11.0:1 | 11.0:1 |
| Valvetrain | 16-Valve DOHC i-VTEC® | 16-Valve DOHC i-VTEC® |
| Valvetrain Drive Type | Chain | Chain |
| Stainless Steel Exhaust Manifold | X | X |
| MUGEN-Tuned Sport Exhaust System | X | |
| Multi-Point Fuel Injection | X | X |
| Drive-by-Wire™ Throttle System | X | X |
| Front-Wheel Drive | X | X |
| CARB Emissions Rating | LEV-2 | LEV-2 |
| EPA Emissions Rating | Tier 2 / Bin 5 | Tier 2 / Bin 5 |
| Direct Ignition System with Immobilizer | X | X |
| 100K+/- Miles No Scheduled Tune-ups** | X | X |
| **May vary with driving conditions. Does not apply to fluid and filter changes. Exact mileage is determined by actual driving conditions. Please see your owner's manual for more details. | ||
| TRANSMISSION | MUGEN Si Sedan | Si Sedan |
| Close-Ratio 6-Speed Manual Transmission | X | X |
| Gear Ratios: 1st: 3.267, 2nd: 2.130, 3rd: 1.517, 4th: 1.147, 5th: 0.921, 6th: 0.659, Reverse: 3.583, Final Drive: 4.765 | ||
| Helical Limited-Slip Differential | X | X |
| BODY/SUSPENSION/CHASSIS | MUGEN Si Sedan | Si Sedan |
| Unit-Body Construction | X | X |
| MacPherson Strut Front Suspension | X | X |
| Double Wishbone Rear Suspension | X | X |
| Stabilizer Bar (mm., front/rear) | 27.0 / 17.0 | 27.0 / 17.0 |
| MUGEN-Tuned Suspension | X | |
| Power-Assisted Rack-and-Pinion Steering | Electric | Electric |
| Steering Wheel Turns, Lock-to-Lock | 2.65 | 2.65 |
| Steering Ratio | 13.62:1 | 13.62:1 |
| Turning Diameter, Curb-to-Curb (ft.) | 35.4 | 35.4 |
| Power-Assisted Ventilated Front Disc/Solid Rear Disc Brakes (in., front/rear) | 11.8 / 10.2 | 11.8 / 10.2 |
| Wheels (in.) | MUGEN 18x7.5 J Forged Alloy | 17x7J Alloy |
| All-Season Tires | P215/45R17 91V | |
| Michelin® Pilot® Exalto® PE2™ Performance Tires (available) | 215/45ZR17 91W (available) | |
| BFGoodrich® g-Force KDW Summer Tires | 215/40ZR18 | |
| Compact Spare Tire | X | X |
| INTERIOR MEASUREMENTS | MUGEN Si Sedan | Si Sedan |
| Headroom (in., front/rear) | 38.1 / 36.7 | 38.1 / 36.7 |
| Legroom (in., front/rear) | 42.2 / 34.6 | 42.2 / 34.6 |
| Shoulder Room (in., front/rear) | 53.6 / 52.3 | 53.6 / 52.3 |
| Hiproom (in., front/rear) | 51.9 / 51.0 | 51.9 / 51.0 |
| Cargo Volume (cu. ft.) | 12.0 | 12.0 |
| Passenger Volume (cu. ft.) | 88.4 | 88.4 |
| Seating Capacity | 5 | 5 |
| EXTERIOR MEASUREMENTS | MUGEN Si Sedan | Si Sedan |
| Wheelbase (in.) | 106.3 | 106.3 |
| Length (in.) | 177.8 | 176.7 |
| Height (in.) | 55.9 | 56.5 |
| Width (in.) | 69.0 | 69.0 |
| Curb Weight (lbs.) | 2945 | 2945 |
| Weight Distribution (%, front/rear) | 60/40 | 60/40 |
| EPA MILEAGE ESTIMATES*/CAPACITIES | MUGEN Si Sedan | Si Sedan |
| City/Highway | 21/29 | 21/29 |
| Maximum Range | 383 | 383 |
| Crankcase (qt.) | 5.8 | 5.8 |
| Coolant System (qt.) (MT/AT) | 6.7 | 6.7 |
| Fuel (gal.) | 13.2 | 13.2 |
| Required Fuel | Premium Unleaded | Premium Unleaded |
| *Based on 2008 EPA mileage estimates, reflecting new EPA fuel economy methods beginning with 2008 models. Use for comparison purposes only. Do not compare to models before 2008. Your actual mileage will vary depending on how you drive and maintain your vehicle. | ||