The Subaru Legacy VI 2.5i, produced between 2014 and 2017, represented a significant evolution of Subaru’s mid-size sedan. This generation, internally designated as the 2014-2017 model years, continued the Legacy’s reputation for standard all-wheel drive and a focus on practicality. The 2.5i variant, equipped with a 2.5-liter naturally aspirated boxer engine and a continuously variable transmission (CVT), occupied a central position in the Legacy VI lineup, offering a balance between performance, fuel efficiency, and affordability. It served as the primary volume seller for the model, appealing to families and individuals seeking a reliable and capable all-weather vehicle.
Technical Specifications
| Brand | Subaru |
| Model | Legacy |
| Generation | Legacy VI |
| Type (Engine) | 2.5i (175 Hp) AWD CVT |
| Start of production | 2014 |
| End of production | 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 9 l/100 km (26.1 US mpg) |
| Fuel consumption (extra urban) | 6.5 l/100 km (36.2 US mpg) |
| Fuel consumption (combined) | 7.8 l/100 km (30.2 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 9 kg/Hp |
| Weight-to-torque ratio | 6.7 kg/Nm |
| Power | 175 Hp @ 5800 rpm |
| Power per litre | 70.1 Hp/l |
| Torque | 235 Nm @ 4000 rpm (173.33 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | FB25 |
| Engine displacement | 2498 cm3 (152.44 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Boxer |
| Cylinder Bore | 94 mm (3.7 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.8 l (5.07 US qt | 4.22 UK qt) |
| Coolant capacity | 7.8 l (8.24 US qt | 6.86 UK qt) |
| Kerb Weight | 1573 kg (3467.87 lbs.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4795 mm (188.78 in.) |
| Width | 1839 mm (72.4 in.) |
| Width including mirrors | 2080 mm (81.89 in.) |
| Height | 1499 mm (59.02 in.) |
| Wheelbase | 2751 mm (108.31 in.) |
| Front track | 1580 mm (62.2 in.) |
| Rear track | 1595 mm (62.8 in.) |
| Minimum turning circle | 11.2 m (36.75 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | automatic transmission Lineartronic |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| 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 |
| Power steering | Electric Steering |
| Tires size | 225/55 R17 97V; 225/50 R18 95H |
| Wheel rims size | 7.5J x 17; 7.5J x 18 |
Powertrain & Engine Architecture
The heart of the 2.5i Legacy VI is the FB25 2.5-liter horizontally-opposed (boxer) four-cylinder engine. This engine is a hallmark of Subaru engineering, known for its smooth operation and inherent balance. The FB25 utilizes a chain-driven dual overhead camshaft (DOHC) valvetrain with four valves per cylinder. Fuel delivery is managed by a multi-point fuel injection system. The engine produces 175 horsepower at 5,800 rpm and 173 lb-ft of torque at 4,000 rpm. The Lineartronic CVT, Subaru’s implementation of a continuously variable transmission, is paired with the FB25. This CVT is designed to mimic traditional gear changes while offering seamless acceleration and improved fuel economy. Unlike some CVTs, Subaru’s Lineartronic includes simulated shift points to provide a more familiar driving experience.
Driving Characteristics
The 2.5i with the CVT delivers adequate, though not exhilarating, performance. Acceleration is smooth and linear, prioritizing efficiency over outright speed. The CVT effectively keeps the engine in its optimal power band, providing responsive acceleration for everyday driving situations. Compared to the available 3.6-liter six-cylinder engine, the 2.5i offers significantly less power, resulting in slower acceleration times. However, the 2.5i’s lighter weight and more efficient CVT contribute to better fuel economy. The CVT’s programming is tuned for comfort and efficiency, and while it offers a manual shift mode with simulated gears, it doesn’t provide the same level of engagement as a traditional automatic transmission or a manual gearbox. The all-wheel-drive system provides excellent traction in various weather conditions, a key selling point for the Legacy.
Equipment & Trim Levels
The 2.5i trim typically included standard features such as automatic headlights, a rearview camera, a 6.2-inch touchscreen infotainment system with Bluetooth connectivity, and a suite of safety features including anti-lock brakes, stability control, and multiple airbags. Higher trim levels, such as the Premium and Limited, added features like leather upholstery, a power driver’s seat, a sunroof, and a more advanced infotainment system with navigation. Optional extras for the 2.5i included a Harman Kardon premium audio system, keyless access with push-button start, and Subaru’s EyeSight driver-assist technology, which incorporates adaptive cruise control, lane departure warning, and automatic emergency braking.
Chassis & Braking
The Legacy VI utilizes a McPherson strut front suspension and a double-wishbone rear suspension, providing a comfortable and controlled ride. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering. The 2.5i models are equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The all-wheel-drive system utilizes a symmetrical design, distributing power evenly to all four wheels for optimal traction. The steering is rack-and-pinion with electric power assist, offering a light and responsive feel.
Market Reception & Comparison
The 2.5i CVT Legacy VI was generally well-received by automotive critics. It was praised for its comfortable ride, spacious interior, standard all-wheel drive, and good fuel economy. However, some reviewers noted that the engine lacked the power of some competitors and that the CVT, while efficient, didn’t offer the most engaging driving experience. Compared to other mid-size sedans like the Toyota Camry and Honda Accord, the Legacy 2.5i offered a unique combination of features, particularly its standard all-wheel drive. The 3.6R model offered a significant performance upgrade, but at a higher price point and with reduced fuel efficiency. The 2.5i provided a more balanced option for buyers prioritizing practicality and value.
Legacy
The FB25 engine and Lineartronic CVT combination proved to be relatively reliable in the Legacy VI. While some owners have reported minor issues with the CVT, such as occasional hesitation or shuddering, these problems are not widespread. The engine is known for its durability and longevity, provided it receives regular maintenance. On the used car market, the 2014-2017 Legacy 2.5i remains a popular choice for buyers seeking a dependable and affordable all-wheel-drive sedan. Its reputation for reliability, combined with its spacious interior and standard features, makes it a compelling option in its price range. The Legacy VI 2.5i continues to be a testament to Subaru’s commitment to building practical and capable vehicles.
