2008 WRX | 2008 WRX STI | 2007 WRX STI | |
| BODY STYLES | 4-door, 5-passenger 5-door, 5-passenger | 5-door, 5-passenger | 4-door, 5-passenger |
| ENGINE | 4-cylinder horizontally opposed (Boxer), double overhead-cam (DOHC), turbocharged/intercooled | 4-cylinder horizontally opposed (Boxer), double overhead-cam (DOHC), turbocharged/intercooled | 4-cylinder horizontally opposed (Boxer), double overhead-cam (DOHC), turbocharged/intercooled |
| Displacement | 2.5-liter | 2.5-liter | 2.5-liter |
| Horsepower | 224 @ 5,200 rpm | 305 @ 6,000 rpm | 293 @ 6,000 rpm |
| Torque (lb-ft) | 226 @ 2,800 rpm | 290 @ 4,000 rpm | 290 @ 4,000 rpm |
| DRIVETRAIN | Symmetrical All-Wheel Drive | Symmetrical All-Wheel Drive | Symmetrical All-Wheel Drive |
| Transmission types: | |||
| Standard | 5-speed manual | 6-speed manual | 6-speed manual |
| Optional | 4-speed electronic automatic with SPORTSHIFT® manual control | NA | NA |
| Gear ratios, manual (:1): | |||
| 1st gear | 3.166 | 3.636 | 3.636 |
| 2nd gear | 1.882 | 2.235 | 2.235 |
| 3rd gear | 1.296 | 1.521 | 1.521 |
| 4th gear | 0.972 | 1.137 | 1.137 |
| 5th gear | 0.738 | 0.971 | 0.971 |
| 6th gear | – | 0.756 | 0.756 |
| Reverse | 3.333 | 3.545 | 3.545 |
| Gear ratios, automatic (:1): | |||
| 1st gear | 2.785 | NA | NA |
| 2nd gear | 1.545 | NA | NA |
| 3rd gear | 1.000 | NA | NA |
| 4th gear | 0.694 | NA | NA |
| Reverse | 2.727 | NA | NA |
| Final drive ratio (:1): | |||
| Manual | 3.900 | 3.900 | 3.900 |
| Automatic | 3.900 | NA | NA |
| CHASSIS | Unitized body construction with Ring-shaped Reinforcement Frame structure | Unitized body construction with Ring-shaped Reinforcement Frame structure | Unitized body construction with Ring-shaped Reinforcement Frame structure |
| Suspension: | 4-wheel independent | 4-wheel independent | 4-wheel independent |
| Front | Strut-type with lower L-arm | Inverted strut with aluminum alloy lower L-arm | Inverted strut with aluminum alloy lower L-arm |
| Rear | Double wishbone with upper A-arm | Double wishbone with upper A-arm | Inverted strut with aluminum parallel link |
| Brakes | Power assisted 4-wheel disc with 4-channel, 4-sensor Anti-lock Braking System (ABS) and Electronic Brake-force Distribution (EBD) | Super sport power assisted 4-channel, 4-sensor Anti-lock Braking System (ABS) and Electronic Brake-force Distribution (EBD) and Brake Assist and incline start assist | Super sport power assisted 4-channel, 4-sensor Anti-lock Braking System (ABS) and Electronic Brake-force Distribution (EBD) |
| Steering | Rack-and-pinion with power assist | Rack-and-pinion with power assist | Rack-and-pinion with power assist |
| Wheels | 17 x 7.0JJ aluminum alloy | 18 x 8.5JJ aluminum alloy | 17 x 8.0 aluminum-alloy |
| Tires | 205/50 R17 all-season | 245/40 R18 summer only | 225/45 R17 ultra high-performance |
| EXTERIOR DIMENSIONS | |||
| Wheelbase (in) | 103.1 | 103.3 | 99.4 |
| Length (in) | 4-door: 180.3 5-door: 173.8 | 173.8 | 175.8 |
| Height (in) | 58.1 | 58.1 | 56.3 |
| Width (in) | 68.5 | 70.7 | 68.5 |
| Fuel capacity (gal) | 16.9 | 16.9 | 15.9 |
| Curb weight: | |||
| 5-speed manual | 3,142 lb | 3,395 lb (3,373 with BBS wheels) | 3,351 lb |
| 4-speed automatic | 3,208 lb | NA | NA |
| INTERIOR DIMENSIONS | |||
| Head room front/rear (in) | 40.3/37.6 | 40.3/37.6 | 38.6/36.7 |
| Leg room front/rear (in) | 43.5/33.5 in | 43.5/33.5 | 42.9/33.0 |
| Shoulder room front/rear (in) | 52.8/53.2 | 54.8/53.2 | 52.7/52.9 |
| Hip room front/rear (in) | 53.4/53.3 | 53.4/53.3 | 53.3/51.9 |
| FUEL EFFICIENCY | |||
| 5-speed manual, 4-speed automatic | 6-speed manual | 6-speed manual | |
| EPA city mpg | TBD | TBD | 19 |
| EPA highway mpg | TBD | TBD | 25 |
| All specifications are preliminary and subject to change. NA = Not Available | |||