The Impreza WRX STI is an all wheel drive hatchback motor vehicle with a front placed engine, from Subaru.
Its 4 cylinder, double overhead camshaft turbocharged engine has 4 valves per cylinder and a volume of 2.5 litres. It produces power and torque figures of 305 bhp (309 PS/227 kW) at 6000 rpm and 393 Nm (290 lbft/40.1 kgm) at 4000 rpm respectively.
A 6 speed manual gearbox transfers the power to the wheels.
Its quoted kerb weight is 1540 kg.
Full specs
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Applicable to the USA domestic market(s). | ||
| bodywork | |||
|---|---|---|---|
| Body type | 4/5 seater hatchback | ||
| Number of doors | 5 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2620 mm | 103.1 inches | |
| Track/tread (front) | 1529 mm | 60.2 inches | |
| Track/tread (rear) | 1539 mm | 60.6 inches | |
| Length | 4415 mm | 173.8 inches | |
| Width | 1796 mm | 70.7 inches | |
| Height | 1476 mm | 58.1 inches | |
| Ground clearance | 155 mm | 6.1 inches | |
| length:wheelbase ratio | 1.69 | ||
| Kerb weight | 1540 kg | 3395 lb | |
| Weight distribution | |||
| fuel tank capacity | 64 litres | 14.1 [16.9] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | turbocharged petrol | ||
| Engine manufacturer | Subaru | ||
| Engine code | |||
| Cylinders | Flat 4 | ||
| Capacity | 2.5 litre 2457 cc (149.935 cu in) |
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| Bore × Stroke | 99.5 × 79 mm
3.92 × 3.11 in |
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| Bore/stroke ratio | 1.26 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 16 valves in total |
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| maximum power output | 309 PS (305 bhp) (227 kW) at 6000 rpm |
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| maximum torque | 393 Nm (290 ft·lb) (40.1 kgm) at 4000 rpm |
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| Specific output | 92.6 kW/litre 125.9 ps/litre 124.1 bhp/litre 2.03 bhp/cu in |
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| Specific torque |
159.95 Nm/litre
1.93 ft·lb/cu3 |
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| Engine construction | aluminium block & head | ||
| Lubrication | wet sumped | ||
| compression ratio | 8.2:1 | ||
| Fuel system | SMPFI | ||
| bmep (brake mean effective pressure) | 2010 kPa (291.5 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 614.25 cc | ||
| Aspiration | Turbo | ||
| Compressor | |||
| Intercooler | Y | ||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | |||
| Power-to-weight ratio | Higher is better 200.8 PS/tonne (1000 kg) 0.2 PS/kg 147.69 kW/tonne (1000 kg) 0.15 kW/kg 198.05 bhp/tonne (1000 kg) 0.2 bhp/kg 0.09 bhp/lb |
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| Weight-to-power ratio | Lower is better 6.77 kg/kW 11.31 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | |||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | |||
| km/litre | |||
| UK MPG | |||
| US MPG | |||
| Carbon dioxide emissions | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | all wheel drive | ||
| Torque split | |||
| Steering | |||
| turns lock-to-lock | 2.800 | ||
| Turning circle | |||
| Front suspension | I.MS.CS.ARB. | ||
| Rear suspension | I.DW.ARB. | ||
| Wheel size front | 8½JJ x 18 | ||
| Wheel size rear | 8½JJ x 18 | ||
| Tyres front | Dunlop SP Sport 600 245/40 R 18 93W | ||
| Tyres rear | Dunlop SP Sport 600 245/40 R 18 93W | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | 330 mm | ||
| Rear brake diameter | 320 mm | ||
| Braked area | |||
| Gearbox | 6 speed manual | ||
| Top gear ratio | 0.76 | ||
| Final drive ratio | 3.90 | ||
| general | |||
| Carfolio.com ID | 181236 | ||
| Production total | |||
| Model code | |||
| RAC rating | 24.6 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2007 Subaru Impreza WRX STI (2008) added 2008-07-20. Last modified 2013-02-28. |
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