The BMW X1 (F48) 25d xDrive Steptronic, produced from 2015 to 2018, represents a significant entry in BMW’s compact luxury SUV lineup. This variant, powered by a 2.0-liter turbocharged diesel engine producing 231 horsepower, was positioned as a mid-range offering within the F48 X1 series, bridging the gap between the entry-level 20d models and the higher-performance xDrive28i gasoline variant. The F48 generation marked a shift for the X1, moving from a rear-wheel-drive based platform to a front-wheel-drive based UKL1 platform shared with MINI, offering increased interior space and improved fuel efficiency. The “25d” designation signifies the engine’s approximate power output, while “xDrive” denotes BMW’s all-wheel-drive system, and “Steptronic” refers to the eight-speed automatic transmission.
Technical Specifications
| Brand | BMW |
| Model | X1 |
| Generation | X1 (F48) |
| Type (Engine) | 25d (231 Hp) xDrive Steptronic |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 5.8 – 5.9 l/100 km (40.6 – 39.9 US mpg) |
| Fuel consumption (extra urban) | 4.6 – 4.8 l/100 km (51.1 – 49 US mpg) |
| Fuel consumption (combined) | 5.0 – 5.2 l/100 km (47 – 45.2 US mpg) |
| CO2 emissions | 132 – 137 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.6 sec |
| Acceleration 0 – 62 mph | 6.6 sec |
| Acceleration 0 – 60 mph | 6.3 sec |
| Maximum speed | 235 km/h (146.02 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.8 kg/Hp |
| Weight-to-torque ratio | 3.5 kg/Nm |
| Power | 231 Hp @ 4400 rpm |
| Torque | 450 Nm @ 1500-3000 rpm (331.9 lb.-ft. @ 1500-3000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | B47C20B |
| Engine displacement | 1995 cm3 (121.74 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Compression ratio | 16.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 6.7 l (7.08 US qt | 5.9 UK qt) |
| Kerb Weight | 1575 kg (3472.28 lbs.) |
| Max. weight | 2170 kg (4784.03 lbs.) |
| Max load | 595 kg (1311.75 lbs.) |
| Trunk (boot) space – minimum | 505 l (17.83 cu. ft.) |
| Trunk (boot) space – maximum | 1550 l (54.74 cu. ft.) |
| Fuel tank capacity | 51 l (13.47 US gal | 11.22 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4439 mm (174.76 in.) |
| Width | 1821 mm (71.69 in.) |
| Height | 1598 mm (62.91 in.) |
| Wheelbase | 2670 mm (105.12 in.) |
| Front track | 1561 mm (61.46 in.) |
| Rear (Back) track | 1562 mm (61.5 in.) |
| Ride height (ground clearance) | 183 mm (7.2 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle (turning diameter) | 11.4 m (37.4 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 225/55 R17 97W; 225/45 R19 |
| Wheel rims size | 7.5J x 17; 8J x 19 |
Powertrain & Engine Architecture
The heart of the X1 25d is the BMW B47C20B, a 2.0-liter inline-four cylinder diesel engine. This engine is part of BMW’s modular engine family, known for its efficiency and refinement. It utilizes a second-generation common rail direct injection system, delivering fuel at pressures up to 2,000 bar for optimized combustion. The engine is equipped with a twin-scroll turbocharger with variable geometry turbine (VGT) technology, enhancing responsiveness and minimizing turbo lag. An intercooler further cools the intake air, increasing power output. The eight-speed Steptronic automatic transmission is a torque-converter type, offering smooth and quick shifts. It features adaptive shift programs that adjust to the driver’s style and road conditions. The transmission is designed to work seamlessly with the xDrive all-wheel-drive system, distributing power between the front and rear axles as needed for optimal traction.
Driving Characteristics
The X1 25d xDrive Steptronic delivers a balanced driving experience. The 450 Nm (331.9 lb-ft) of torque available from 1500-3000 rpm provides strong acceleration and effortless cruising. The 0-60 mph time of around 6.3 seconds is respectable for a compact SUV. While not as sporty as the gasoline-powered xDrive28i, the 25d offers ample power for everyday driving and highway overtaking. The eight-speed automatic transmission contributes to relaxed highway driving with its tall gear ratios, keeping engine speeds low. Compared to the six-speed manual transmission available on some X1 models, the Steptronic automatic prioritizes comfort and convenience over driver engagement. The xDrive all-wheel-drive system provides enhanced stability and traction, particularly in inclement weather conditions.
Equipment & Trim Levels
The X1 25d xDrive Steptronic typically came standard with features such as automatic climate control, a 6.5-inch infotainment system with iDrive controller, power-adjustable front seats, and a leather-wrapped steering wheel. Optional extras included a larger 8.8-inch infotainment screen with navigation, a panoramic sunroof, heated front seats, and a premium sound system. Interior upholstery options ranged from standard cloth to leatherette and full leather. Trim levels varied by market, but generally offered packages that bundled popular options together. The X1 25d was often positioned as a well-equipped mid-range model, offering a good balance of features and price.
Chassis & Braking
The F48 X1 utilizes a front-wheel-drive based architecture with a MacPherson strut front suspension and a multi-link rear suspension. This setup provides a comfortable ride and predictable handling. The xDrive all-wheel-drive system adds to the stability, especially during cornering. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock Braking System (ABS) and Electronic Stability Control (ESC) are standard safety features. The suspension tuning is geared towards comfort, but the X1 still offers a reasonably engaging driving experience.
Market Reception & Comparison
The BMW X1 25d xDrive Steptronic was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and spacious interior. The diesel engine was noted for its refinement and strong torque output. Compared to the gasoline-powered xDrive28i, the 25d offered better fuel economy but slightly less outright performance. The 20d models, with their lower power output, were more affordable but lacked the punch of the 25d. Reliability reports suggest that the B47 engine is generally robust, but potential issues with the diesel particulate filter (DPF) and turbocharger should be considered, particularly on vehicles with high mileage.
Legacy
The BMW X1 (F48) 25d xDrive Steptronic remains a popular choice in the used car market. Its combination of fuel efficiency, practicality, and BMW’s reputation for build quality makes it an attractive option for buyers seeking a compact luxury SUV. The B47 engine, while known for some potential issues, is generally considered reliable with proper maintenance. Regular servicing, including oil changes and DPF regeneration, is crucial for ensuring the long-term health of the powertrain. The F48 X1 represents a significant step forward for BMW’s compact SUV offering, and the 25d variant continues to provide a compelling blend of performance, efficiency, and luxury.
