The Subaru WRX STI Hatchback, specifically the 2.5-liter turbocharged variant producing 300 horsepower, was a performance-focused offering from Subaru produced between 2007 and 2011. This model represented a significant evolution of the WRX STI, bringing the iconic rally-bred performance to a more practical hatchback body style. It was primarily marketed in Japan, Europe, and Australia, with limited grey market imports to the United States, where the STI was only offered in sedan form during this period. The 2007-2011 STI hatchback occupied the top performance tier within the Subaru lineup, positioned above the standard WRX and aimed at enthusiasts seeking uncompromising handling and power.
Technical Specifications
| Brand | Subaru |
| Model | WRX |
| Generation | WRX STI Hatchback |
| Type (Engine) | 2.5 (300 Hp) Turbo |
| Start of production | 2007 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 13.8 l/100 km (17 US mpg, 20.5 UK mpg, 7.2 km/l) |
| Fuel consumption (extra urban) | 8.2 l/100 km (28.7 US mpg, 34.4 UK mpg, 12.2 km/l) |
| Fuel consumption (combined) | 10.3 l/100 km (22.8 US mpg, 27.4 UK mpg, 9.7 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.2 sec |
| Acceleration 0 – 62 mph | 5.2 sec |
| Acceleration 0 – 60 mph | 4.9 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Weight-to-power ratio | 5 kg/Hp, 199.3 Hp/tonne |
| Weight-to-torque ratio | 3.7 kg/Nm, 270.4 Nm/tonne |
| Power | 300 Hp @ 6000 rpm |
| Power per litre | 122.1 Hp/l |
| Torque | 407 Nm @ 4000 rpm (300.19 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EJ257 |
| Engine displacement | 2457 cm3 (149.94 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Boxer |
| Cylinder Bore | 99.5 mm (3.92 in.) |
| Piston Stroke | 79 mm (3.11 in.) |
| Compression ratio | 8.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 4.3 l (4.54 US qt | 3.78 UK qt) |
| Coolant | 7.7 l (8.14 US qt | 6.78 UK qt) |
| Kerb Weight | 1505 kg (3317.96 lbs.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 UK gal) |
| Length | 4415 mm (173.82 in.) |
| Width | 1795 mm (70.67 in.) |
| Height | 1475 mm (58.07 in.) |
| Wheelbase | 2625 mm (103.35 in.) |
| Front track | 1530 mm (60.24 in.) |
| Rear track | 1540 mm (60.63 in.) |
| Minimum turning circle | 10.1 m (33.14 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 6 |
| Gearbox type | Manual transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Double wishbone |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 245/40 R18 |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
The heart of the 2007-2011 WRX STI Hatchback is the EJ257 2.5-liter turbocharged boxer-4 engine. This engine, a hallmark of the STI, features a closed-deck block for increased strength, forged pistons, and a high-flow cylinder head. The turbocharger is a twin-scroll unit, designed to minimize turbo lag and provide a more responsive power delivery. Fuel is delivered via multi-point fuel injection. The engine’s 8.2:1 compression ratio is a compromise between performance and reliability. The EJ257 produces 300 horsepower at 6000 rpm and 407 Nm (300.19 lb-ft) of torque at 4000 rpm. The engine is mated exclusively to a six-speed manual transmission, sending power to all four wheels via Subaru’s symmetrical all-wheel-drive system. The transmission features short throw ratios for quick and precise gear changes.
Driving Characteristics
The 300 hp STI hatchback delivers exhilarating performance. Acceleration from 0-60 mph takes approximately 4.9 seconds, and it can reach a top speed of 155 mph. The all-wheel-drive system provides exceptional grip, allowing for confident cornering and acceleration even in adverse conditions. Compared to the standard WRX, the STI offers significantly more power and a more aggressive driving experience. The six-speed manual transmission requires a skilled driver to extract the most performance, while the clutch is heavier than that found in the WRX. The suspension is firm, prioritizing handling over ride comfort. While the STI is capable on the street, it truly shines on a track or winding road.
Equipment & Trim Levels
The STI Hatchback was typically well-equipped, even in base form. Standard features included sport seats with bolstering, a leather-wrapped steering wheel, automatic climate control, and a premium audio system. Exterior features included a prominent rear wing, alloy wheels, and unique STI badging. Optional extras included a sunroof, navigation system, and upgraded audio options. Interior trim was generally focused on functionality and durability, with a sporty aesthetic. The hatchback body style offered increased practicality compared to the sedan, with a more accessible cargo area.
Chassis & Braking
The STI Hatchback features a reinforced chassis and a sophisticated suspension system designed for high-performance driving. The front suspension utilizes McPherson struts, while the rear employs a double-wishbone setup. Stabilizer bars are thicker than those found in the standard WRX, reducing body roll during cornering. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The ABS (Anti-lock Braking System) is standard. The suspension tuning is firm, prioritizing handling and control over ride comfort.
Market Reception & Comparison
The STI Hatchback was highly regarded by automotive journalists and enthusiasts for its exceptional performance and handling. Critics praised its powerful engine, responsive steering, and tenacious all-wheel-drive system. However, some noted the firm ride and relatively high fuel consumption. Compared to the standard WRX, the STI offered a significant performance upgrade, but at a higher price point. The STI also differed from the WRX in terms of its more aggressive styling and track-focused suspension tuning. The lack of an automatic transmission option was seen as a positive by many enthusiasts, who preferred the greater control offered by the manual gearbox.
Legacy
The 2007-2011 Subaru WRX STI Hatchback remains a highly sought-after vehicle among enthusiasts. The EJ257 engine, while known for its potential maintenance needs (particularly head gasket issues), is considered a robust and tunable powerplant. Well-maintained examples command a premium in the used car market. The STI Hatchback’s combination of performance, practicality, and iconic status has cemented its place as a modern classic. Its influence can be seen in subsequent generations of the WRX STI and continues to inspire performance car enthusiasts worldwide.
