The Subaru Outback VI (BT) 2.5, produced from 2019 to April 2022, represents the sixth generation of Subaru’s popular all-wheel-drive wagon. Positioned as a mainstream offering within the BT generation lineup, the 2.5-liter variant with a continuously variable transmission (CVT) served as the volume seller in many North American markets. It aimed to balance practicality, capability, and fuel efficiency for families and outdoor enthusiasts. This model built upon the foundation of the 1HX0/A3 platform, shared with other Subaru models like the Legacy and Forester, but distinguished itself with standard all-wheel drive and increased ground clearance.
Technical Specifications
| Brand | Subaru |
| Model | Outback |
| Generation | Outback VI (BT) |
| Type (Engine) | 2.5 (182 Hp) AWD CVT |
| Start of production | 2019 |
| End of production | April, 2022 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 9 l/100 km (26.1 US mpg, 31.4 UK mpg, 11.1 km/l) |
| Fuel consumption (extra urban) | 7.1 l/100 km (33.1 US mpg, 39.8 UK mpg, 14.1 km/l) |
| Fuel consumption (combined) | 8.1 l/100 km (29 US mpg, 34.9 UK mpg, 12.3 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 9.1 kg/Hp, 110.4 Hp/tonne |
| Weight-to-torque ratio | 6.9 kg/Nm, 145.6 Nm/tonne |
| Power | 182 Hp @ 5800 rpm |
| Power per litre | 72.9 Hp/l |
| Torque | 240 Nm @ 4400 rpm (177.01 lb.-ft. @ 4400 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 | 12:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.2 l (4.44 US qt | 3.7 UK qt) |
| Coolant | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1648-1711 kg (3633.22 – 3772.11 lbs.) |
| Trunk (boot) space – minimum | 920 l (32.49 cu. ft.) |
| Trunk (boot) space – maximum | 2143 l (75.68 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Permitted trailer load with brakes (12%) | 1225 kg (2700.66 lbs.) |
| Length | 4859 mm (191.3 in.) |
| Width | 1854 mm (72.99 in.) |
| Width including mirrors | 2083 mm (82.01 in.) |
| Height | 1679 mm (66.1 in.) |
| Wheelbase | 2745 mm (108.07 in.) |
| Front track | 1570 mm (61.81 in.) |
| Rear (Back) track | 1595 mm (62.8 in.) |
| Ride height (ground clearance) | 220 mm (8.66 in.) |
| Approach angle | 18.6° |
| Departure angle | 21.7° |
| Ramp-over (brakeover) angle | 19.4° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | automatic transmission CVT 8 |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Double wishbone |
| Front brakes | Ventilated discs, 315 mm |
| Rear brakes | Ventilated discs, 300 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/65 R17; 225/60 R18 |
| Wheel rims size | 7J x 17; 7J x 18 |
Powertrain & Engine Architecture
The heart of the Outback 2.5 was the FB25 2.5-liter naturally aspirated boxer-four engine. This engine, a hallmark of Subaru’s engineering, featured a horizontally opposed configuration, which contributes to a lower center of gravity and improved balance. The FB25 utilized direct fuel injection, enhancing fuel efficiency and responsiveness. The engine’s DOHC (Dual Overhead Camshaft) valvetrain, with four valves per cylinder, optimized airflow for increased power output. The engine produced 182 horsepower at 5,800 rpm and 177 lb-ft of torque at 4,400 rpm. Paired with the FB25 was a continuously variable transmission (CVT) with simulated eight ‘gear’ ratios. Subaru’s Lineartronic CVT was designed to provide smooth, seamless acceleration and improved fuel economy compared to traditional automatic transmissions. The CVT was programmed with specific ratios to mimic the feel of a conventional automatic, addressing some common criticisms of CVTs.
Driving Characteristics
The 2.5L/CVT Outback offered a comfortable and predictable driving experience. While not particularly sporty, the engine provided adequate power for everyday driving and highway cruising. The CVT, while efficient, could sometimes feel less engaging than a traditional automatic or manual transmission, exhibiting a ‘rubber band’ effect during hard acceleration. The all-wheel-drive system, standard on all Outback models, provided excellent traction in various weather conditions. The CVT’s programming prioritized fuel economy, resulting in a more relaxed acceleration profile compared to the turbocharged variants. The gear ratios were tuned for efficiency, meaning the engine often operated at lower RPMs during steady-state cruising.
Equipment & Trim Levels
The 2.5 trim level of the Outback VI typically served as the base model, offering a comprehensive suite of standard features. These included automatic climate control, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, and Subaru’s EyeSight driver-assist technology, which encompassed features like adaptive cruise control, lane departure warning, and automatic emergency braking. Interior upholstery was typically cloth, with options for leather upgrades on higher sub-trims. Available options included a power sunroof, premium audio system, and heated front seats. The dashboard layout was functional and user-friendly, prioritizing ease of use over stylistic flair.
Chassis & Braking
The Outback VI utilized a McPherson strut front suspension and a double-wishbone rear suspension, providing a comfortable ride and predictable handling. Stabilizer bars were fitted to both axles to reduce body roll during cornering. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. The braking system was augmented by ABS (Anti-lock Braking System) and electronic brake-force distribution. The Outback’s relatively high ground clearance (8.7 inches) and robust suspension allowed it to tackle moderate off-road terrain with confidence.
Market Reception & Comparison
The 2.5L/CVT Outback was generally well-received by automotive critics as a practical and capable family vehicle. While some reviewers noted the lack of outright performance compared to the turbocharged 2.6T models, the 2.5 offered a compelling value proposition with its standard all-wheel drive, spacious interior, and comprehensive safety features. Fuel economy was competitive within its segment, averaging around 29 mpg combined. Compared to the 2.6T, the 2.5 was more affordable to purchase and maintain, making it an attractive option for budget-conscious buyers. The 2.6T offered significantly more power and a more engaging driving experience, but at a higher price point.
Legacy
The FB25 engine, in general, has proven to be a reliable powerplant, though head gasket issues plagued earlier iterations of the engine (prior to the BT generation). The Lineartronic CVT, while generally durable, requires regular fluid changes to maintain optimal performance. On the used car market, the Outback VI 2.5 remains a popular choice due to its reputation for reliability, practicality, and all-weather capability. Well-maintained examples continue to command reasonable prices, making it a solid option for buyers seeking a versatile and dependable wagon.
