The Subaru Impreza III Hatchback 2.5i, produced between 2007 and 2011, represented a significant evolution in Subaru’s compact car lineup. Positioned as a practical and sporty option, the 2.5i variant, boasting 170 horsepower, occupied a middle ground within the Impreza range, offering a balance between performance and fuel efficiency. This generation Impreza (internally designated GE/GH/GR/GV) moved away from the earlier, more rally-focused image of the Impreza WRX and STI, aiming for broader market appeal. The hatchback body style, particularly popular in Europe and Australia, provided increased cargo versatility compared to the sedan version offered concurrently in North America.
Technical Specifications
| Brand | Subaru |
| Model | Impreza |
| Generation | Impreza III Hatchback |
| Type (Engine) | 2.5i (170 Hp) |
| Start of production | 2007 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 11.8 l/100 km (19.9 US mpg) |
| Fuel consumption (extra urban) | 8.7 l/100 km (27 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.8 sec |
| Acceleration 0 – 62 mph | 5.8 sec |
| Acceleration 0 – 60 mph | 5.5 sec |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 8.2 kg/Hp |
| Weight-to-torque ratio | 6 kg/Nm |
| Power | 170 Hp @ 6000 rpm |
| Power per litre | 69.2 Hp/l |
| Torque | 230 Nm @ 4400 rpm (169.64 lb.-ft. @ 4400 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EJ253 |
| 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.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.2 l (4.44 US qt | 3.7 UK qt) |
| Coolant capacity | 6.8 l (7.19 US qt | 5.98 UK qt) |
| Kerb Weight | 1390 kg (3064.43 lbs.) |
| Trunk (boot) space – maximum | 538 l (19 cu. ft.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 UK gal) |
| Length | 4415 mm (173.82 in.) |
| Width | 1740 mm (68.5 in.) |
| Height | 1475 mm (58.07 in.) |
| Wheelbase | 2620 mm (103.15 in.) |
| Front track | 1495 mm (58.86 in.) |
| Rear track | 1500 mm (59.06 in.) |
| Minimum turning circle | 10.6 m (34.78 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 5 |
| Gearbox type | Manual transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Several levers and rods |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 205/55 R16 |
| Wheel rims size | 16 |
Powertrain & Engine Architecture
The heart of the Impreza 2.5i was the EJ253 engine, a 2.5-liter naturally aspirated, horizontally-opposed (boxer) four-cylinder. This engine design, a Subaru hallmark, offered inherent balance and a low center of gravity, contributing to the car’s handling characteristics. The EJ253 utilized multi-point fuel injection and a dual overhead camshaft (DOHC) valvetrain. Unlike the turbocharged engines found in the WRX and STI models, the 2.5i relied on displacement and efficient engine management for its power output. The five-speed manual transmission was standard, providing direct control over the engine’s power. The engine’s longitudinal mounting, coupled with Subaru’s symmetrical all-wheel-drive system, further enhanced traction and stability.
Driving Characteristics
The 170 hp output of the 2.5i, combined with the all-wheel-drive system, delivered respectable acceleration. The 0-60 mph time of around 5.5 seconds was competitive for its class. However, it wasn’t as overtly sporty as the turbocharged Impreza variants. The engine provided a linear power delivery, making it easy to drive in everyday situations. The manual transmission offered precise shifts, and the all-wheel-drive system inspired confidence in various weather conditions. Compared to the higher-output models, the 2.5i prioritized fuel economy and a more comfortable driving experience. The gear ratios were tuned for a balance of acceleration and highway cruising efficiency.
Equipment & Trim Levels
The Impreza 2.5i typically came standard with features like air conditioning, power windows and locks, a CD player with auxiliary input, and ABS. Higher trim levels added options such as a sunroof, upgraded audio systems, alloy wheels, and keyless entry. Interior upholstery was generally cloth, with leather options available on some trims. The dashboard layout was functional and straightforward, prioritizing usability over flashy design. The hatchback configuration offered a generous amount of cargo space, making it a practical choice for families or those needing to transport larger items.
Chassis & Braking
The Impreza 2.5i utilized an independent McPherson strut suspension in the front and a multi-link suspension in the rear. This setup provided a good balance of ride comfort and handling precision. Ventilated disc brakes were used on all four wheels, providing adequate stopping power. ABS was standard, enhancing braking performance in emergency situations. The chassis was designed to be rigid, contributing to the car’s overall stability and handling. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The Impreza 2.5i was generally well-received by automotive critics as a practical and reliable compact car. It was praised for its standard all-wheel drive, spacious interior, and comfortable ride. However, some reviewers noted that the engine lacked the excitement of the turbocharged models. Compared to other compact cars in its class, the Impreza 2.5i offered a unique combination of features, particularly its standard all-wheel drive. Fuel economy was competitive, though not class-leading. Reliability was generally good, with the EJ253 engine proving to be a durable unit when properly maintained.
Legacy
The Subaru Impreza III Hatchback 2.5i remains a popular choice in the used car market, particularly for those seeking a reliable and practical all-wheel-drive vehicle. The EJ253 engine is known for its longevity, although regular maintenance, including oil changes and timing belt replacements, is crucial. The car’s simple design and readily available parts make it relatively easy and affordable to repair. While it may not offer the same performance as the WRX or STI models, the 2.5i provides a comfortable and capable driving experience that continues to appeal to a wide range of buyers. Its reputation for durability and all-weather capability ensures its continued presence on roads today.
