The BMW X1 (F48) 18i sDrive Steptronic, produced from 2018 to 2019, represents an entry-level offering within the second generation of BMW’s compact SUV. Positioned as a more accessible variant of the F48 X1, it catered to buyers prioritizing fuel efficiency and a comfortable driving experience over outright performance. This model utilized a 1.5-liter turbocharged three-cylinder engine paired with a seven-speed Steptronic automatic transmission and front-wheel drive (sDrive). It played a significant role in broadening the X1’s appeal, attracting a wider customer base to the premium compact SUV segment.
Technical Specifications
| Brand | BMW |
| Model | X1 |
| Generation | X1 (F48) |
| Type (Engine) | 18i (140 Hp) sDrive Steptronic |
| Start of production | 2018 |
| End of production | 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7 l/100 km (33.6 US mpg, 40.4 UK mpg, 14.3 km/l) |
| Fuel consumption (extra urban) | 5.1 l/100 km (46.1 US mpg, 55.4 UK mpg, 19.6 km/l) |
| Fuel consumption (combined) | 5.8 l/100 km (40.6 US mpg, 48.7 UK mpg, 17.2 km/l) |
| CO2 emissions | 133 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.7 sec |
| Acceleration 0 – 62 mph | 9.7 sec |
| Acceleration 0 – 60 mph | 9.2 sec |
| Maximum speed | 203 km/h (126.14 mph) |
| Emission standard | Euro 6d-Temp |
| Weight-to-power ratio | 10.2 kg/Hp, 97.9 Hp/tonne |
| Weight-to-torque ratio | 6.5 kg/Nm, 153.8 Nm/tonne |
| Power | 140 Hp @ 4600-6500 rpm |
| Power per litre | 93.4 Hp/l |
| Torque | 220 Nm @ 1480-4200 rpm (162.26 lb.-ft. @ 1480-4200 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | B38A15A |
| Engine displacement | 1499 cm3 (91.47 cu. in.) |
| Number of cylinders | 3 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Valvetrain | VALVETRONIC |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant | 6.7 l (7.08 US qt | 5.9 UK qt) |
| Kerb Weight | 1430 kg (3152.61 lbs.) |
| Max. weight | 2025 kg (4464.36 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%) | 1700 kg (3747.86 lbs.) |
| Permitted trailer load without brakes | 740 kg (1631.42 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) | 0.28 |
| Minimum turning circle (turning diameter) | 11.4 m (37.4 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 7 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 |
| Power steering | Electric Steering |
| Tires size | 225/55 R17 87W |
| Wheel rims size | 7.5J x 17 |
INTRODUCTION
The BMW X1 (F48) 18i sDrive Steptronic, launched in 2018 as part of the second-generation X1 lineup, marked a shift towards a more practical and fuel-efficient offering within the BMW range. Built on the UKL2 platform (shared with the MINI Countryman), the F48 X1 moved to a front-wheel-drive biased architecture, a departure from the previous generation’s rear-wheel-drive setup. The 18i variant, powered by the B38 engine and paired with the Steptronic transmission, was designed to appeal to buyers seeking a premium compact SUV with lower running costs and ease of use. This model was primarily sold in the European market, where fuel efficiency and practicality are highly valued.
Powertrain & Engine Architecture
At the heart of the X1 18i lies the BMW B38A15A, a 1.5-liter turbocharged three-cylinder petrol engine. This engine is a member of BMW’s modular engine family, known for its compact size and efficiency. It features direct fuel injection, a single twin-scroll turbocharger, and BMW’s VALVETRONIC variable valve timing and lift technology. VALVETRONIC allows for precise control of valve timing and lift, optimizing engine performance and fuel economy. The B38 produces 140 horsepower at 4600-6500 rpm and 220 Nm (162 lb-ft) of torque between 1480-4200 rpm. The engine’s turbocharger is integrated into the exhaust manifold, improving responsiveness and reducing turbo lag. The seven-speed Steptronic automatic transmission is a torque-converter type, offering smooth and efficient gear changes. It features a wide gear ratio spread, contributing to both fuel economy and acceptable acceleration. The transmission is electronically controlled and adapts to driving style.
Driving Characteristics
The X1 18i sDrive Steptronic delivers a comfortable and refined driving experience, prioritizing ease of use over sporty performance. Acceleration from 0-60 mph takes approximately 9.2 seconds, and the top speed is 126.14 mph. While not particularly quick, the engine provides adequate power for everyday driving situations. The Steptronic transmission shifts smoothly and efficiently, and the wide gear ratio spread helps to keep the engine in its optimal power band. The front-wheel-drive configuration provides good traction in most conditions, but it lacks the dynamic handling characteristics of BMW’s rear-wheel-drive models. The steering is light and precise, making the X1 easy to maneuver in urban environments. Compared to the more powerful X1 20i or the diesel-powered variants, the 18i feels less responsive and requires more planning when overtaking or merging onto highways.
Equipment & Trim Levels
The X1 18i sDrive Steptronic typically came equipped with a respectable level of standard features. These included automatic climate control, a 6.5-inch infotainment system with iDrive controller, Bluetooth connectivity, and a suite of safety features such as ABS, stability control, and multiple airbags. Interior upholstery was typically cloth, with options for leather upgrades. Standard dashboard trim was typically in a satin silver finish, with wood or aluminum options available. Common optional extras included a larger infotainment screen, navigation system, parking sensors, a reversing camera, and a panoramic sunroof. Higher trim levels, such as the Advantage or Sport Line, added features like sport seats, upgraded interior trim, and exterior styling enhancements.
Chassis & Braking
The F48 X1 18i utilizes an independent suspension setup, with coil springs and dampers at the front and a multi-link suspension at the rear. This configuration provides a comfortable ride quality and good handling characteristics. The front brakes are ventilated discs, while the rear brakes are also ventilated discs, providing adequate stopping power for the vehicle’s weight and performance. The X1 18i features electric power steering, which provides a light and precise steering feel. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering. The chassis is designed to balance comfort and handling, prioritizing ride quality over outright sportiness.
Market Reception & Comparison
The X1 18i sDrive Steptronic was generally well-received by automotive critics as a practical and fuel-efficient entry point into the BMW X1 range. It was praised for its comfortable ride, spacious interior, and user-friendly technology. However, some critics noted that the three-cylinder engine could feel strained under heavy load and that the front-wheel-drive configuration lacked the dynamic handling of BMW’s traditional rear-wheel-drive models. Compared to the X1 20i, the 18i offered lower running costs but sacrificed performance. The diesel-powered X1 variants, such as the 18d, provided even better fuel economy but came with a higher purchase price. The 18i positioned itself as a sensible choice for buyers prioritizing value and efficiency.
Legacy
The B38 engine, used in the X1 18i, has proven to be a relatively reliable powertrain. While some early examples experienced issues with the timing chain, these were largely addressed with updated components. The Steptronic transmission is also known for its durability. In the used car market, the X1 18i sDrive Steptronic represents a relatively affordable entry point into BMW ownership. Its fuel efficiency and low maintenance costs make it an attractive option for budget-conscious buyers. However, potential buyers should be aware of the potential for timing chain issues and ensure that the vehicle has been properly maintained. Overall, the X1 18i remains a popular choice in the used car market, offering a blend of practicality, comfort, and BMW brand prestige.
