The Subaru Legacy VI (facelift, introduced in 2017) 2.5i, equipped with a 175 horsepower engine and a continuously variable transmission (CVT), represents a mid-cycle refresh of the sixth-generation Legacy. Produced from 2017 to 2019, this variant occupied a central position within the Legacy lineup, offering a balance of performance, fuel efficiency, and standard features aimed at a broad segment of family car buyers in markets where the Legacy was sold, primarily North America and Canada. The facelift brought updated styling, enhanced safety technology, and refinements to the interior, building upon the established reputation of the Legacy as a reliable and capable all-weather sedan.
Technical Specifications
| Brand | Subaru |
| Model | Legacy |
| Generation | Legacy VI (facelift 2017) |
| Type (Engine) | 2.5i (175 Hp) AWD CVT |
| Start of production | 2017 |
| End of production | 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 9.4 l/100 km (25 US mpg, 30.1 UK mpg, 10.6 km/l) |
| Fuel consumption (extra urban) | 6.9 l/100 km (34.1 US mpg, 40.9 UK mpg, 14.5 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 9.1 kg/Hp, 110 Hp/tonne |
| Weight-to-torque ratio | 6.8 kg/Nm, 147.7 Nm/tonne |
| 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 | 10.3:1 |
| 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 | 1591-1595 kg (3507.55 – 3516.37 lbs.) |
| Trunk (boot) space (minimum) | 425 l (15.01 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4803 mm (189.09 in.) |
| Width | 1839 mm (72.4 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 is the FB25 2.5-liter naturally aspirated boxer-four engine. This engine is a hallmark of Subaru’s engineering, known for its compact design and inherent balance, contributing to smooth operation and reduced vibration. The FB25 utilizes multi-point fuel injection and a double overhead camshaft (DOHC) valvetrain. The engine produces 175 horsepower at 5800 rpm and 173 lb-ft of torque at 4000 rpm. Paired with the FB25 is Subaru’s Lineartronic CVT (Continuously Variable Transmission). This transmission is designed to provide smooth, stepless gear changes, optimizing fuel efficiency and drivability. Unlike traditional automatic transmissions with fixed gear ratios, the CVT allows the engine to operate at its most efficient rpm for any given speed and load.
Driving Characteristics
The 2.5i with the CVT delivers a comfortable and predictable driving experience. While not offering the sporty acceleration of higher-output Legacy variants (like those with the optional turbocharged engine), the 2.5i provides adequate power for everyday driving situations. The CVT is programmed to mimic traditional gear shifts under hard acceleration, providing a more familiar feel for drivers accustomed to conventional automatics. However, under full throttle, the “rubber band” effect common to CVTs can be noticeable, where engine rpm rises quickly without a corresponding immediate increase in vehicle speed. The all-wheel-drive system provides excellent traction in various weather conditions, a key selling point for the Legacy. The steering is light and precise, making the car easy to maneuver in urban environments.
Equipment & Trim Levels
The 2.5i trim typically included standard features such as automatic climate control, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, rearview camera, and Subaru’s EyeSight driver-assist technology, which includes adaptive cruise control, lane departure warning, and automatic emergency braking. Interior upholstery was generally cloth, with available upgrades to leather in higher sub-trims. Optional extras included a power sunroof, premium audio system, and heated front seats. The 2.5i served as the entry point to the Legacy range, offering a well-equipped package for buyers prioritizing value and practicality.
Chassis & Braking
The Legacy VI utilizes a McPherson strut front suspension and a double-wishbone rear suspension, providing a comfortable ride and predictable handling. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The braking system is augmented by ABS (Anti-lock Braking System) to prevent wheel lockup during hard braking, enhancing stability and control. The suspension tuning is geared towards comfort, prioritizing a smooth ride over aggressive handling.
Market Reception & Comparison
The 2017-2019 Subaru Legacy 2.5i CVT received generally positive reviews. Critics praised its standard all-wheel drive, spacious interior, and comprehensive safety features. Fuel economy was considered competitive for its class, achieving around 25 mpg city and 34 mpg highway. Compared to other trims in the Legacy lineup, the 2.5i offered a more affordable entry point, but at the expense of performance. The turbocharged 2.6T models provided significantly more power and a sportier driving experience, while the 2.5i prioritized fuel efficiency and value. Compared to competitors like the Toyota Camry and Honda Accord, the Legacy distinguished itself with its standard all-wheel drive and unique boxer engine configuration.
Legacy
The FB25 engine, when properly maintained, has proven to be a reliable powertrain. Common issues are relatively minor, often related to oil consumption (a known characteristic of some FB-series engines) and occasional CVT maintenance. The Lineartronic CVT, while generally durable, requires regular fluid changes to ensure optimal performance and longevity. On the used car market, the 2017-2019 Legacy 2.5i represents a solid value proposition, offering a well-equipped, reliable, and safe sedan at a reasonable price. Its all-wheel-drive system continues to be a significant draw for buyers in regions with inclement weather, ensuring its continued appeal in the used car market.
