The BMW X1 (F48, facelifted in 2019) 18i Steptronic represents a key entry point into the second generation of BMW’s compact SUV. Introduced as part of the mid-cycle refresh, this variant, produced from 2019 to 2020, aimed to balance affordability with the premium experience expected of the BMW brand. Positioned as the base engine option in many markets, the 18i utilized a 1.5-liter turbocharged three-cylinder engine paired with a 7-speed Steptronic automatic transmission. It was designed to appeal to buyers prioritizing fuel efficiency and ease of use over outright performance, particularly in urban environments. The F48 X1, built on the UKL2 platform shared with the MINI Countryman, marked a shift towards a more front-wheel-drive biased architecture for BMW, though all-wheel drive remained available as an option.
Technical Specifications
| Brand | BMW |
| Model | X1 |
| Generation | X1 (F48, facelift 2019) |
| Type (Engine) | 18i (140 Hp) Steptronic |
| Start of production | 2019 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 6.8-7.0 l/100 km (34.6 – 33.6 US mpg, 41.5 – 40.4 UK mpg, 14.7 – 14.3 km/l) |
| Fuel consumption (extra urban) | 4.6-4.9 l/100 km (51.1 – 48 US mpg, 61.4 – 57.6 UK mpg, 21.7 – 20.4 km/l) |
| Fuel consumption (combined) | 5.4-5.7 l/100 km (43.6 – 41.3 US mpg, 52.3 – 49.6 UK mpg, 18.5 – 17.5 km/l) |
| CO2 emissions | 122-129 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 @ 4500-6500 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 |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant | 6.5 l (6.87 US qt | 5.72 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 | 80 kg (176.37 lbs.) |
| Permitted trailer load with brakes (8%) | 1700 kg (3747.86 lbs.) |
| Permitted trailer load with brakes (12%) | 1700 kg (3747.86 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4447 mm (175.08 in.) |
| Width | 1821 mm (71.69 in.) |
| Width including mirrors | 2060 mm (81.1 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.) |
| Front overhang | 848 mm (33.39 in.) |
| Rear overhang | 929 mm (36.57 in.) |
| Minimum turning circle | 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 97W |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
The heart of the X1 18i is BMW’s B38A15A engine, a 1.5-liter inline three-cylinder gasoline engine. This engine is a member of BMW’s modular engine family, utilizing a single-scroll, twin-power turbocharger and direct fuel injection to deliver a balance of power and efficiency. The B38 features an aluminum engine block and head, contributing to its relatively lightweight construction. The engine’s valvetrain employs BMW’s VALVETRONIC technology, which allows for stepless control of valve lift, optimizing combustion efficiency and throttle response. Paired with the engine is BMW’s 7-speed Steptronic automatic transmission. This transmission is known for its smooth shifts and adaptive learning capabilities, adjusting shift points based on driving style. The transmission is a torque converter automatic, offering a comfortable driving experience, but not the same level of responsiveness as a dual-clutch transmission.
Driving Characteristics
The 140 horsepower and 220 Nm (162 lb-ft) of torque produced by the 1.8i powertrain result in a 0-60 mph time of around 9.2 seconds. While not particularly sporty, the engine provides adequate power for everyday driving situations. The Steptronic transmission is well-tuned for relaxed cruising, with smooth gear changes and a willingness to downshift when needed. Compared to the more powerful X1 20i or the diesel-powered variants, the 18i feels noticeably less energetic, especially when fully loaded or tackling steep inclines. The gear ratios are optimized for fuel economy, meaning the engine can feel strained at higher RPMs. However, the low-end torque delivery from the turbocharger helps to provide reasonable acceleration from a standstill.
Equipment & Trim Levels
The X1 18i typically came equipped with a respectable level of standard features. These included automatic climate control, a 6.5-inch infotainment system with iDrive controller, power windows and locks, and a leather-wrapped steering wheel. Interior upholstery was typically cloth, though leather options were available. Common optional extras included a larger infotainment screen, navigation system, parking sensors, a panoramic sunroof, and upgraded audio systems. Trim levels varied by market, but generally offered packages that added features like heated seats, automatic headlights, and rain-sensing wipers.
Chassis & Braking
The F48 X1 utilizes a front-wheel-drive based chassis with independent suspension all around. The front suspension consists of coil springs and struts, while the rear features a multi-link setup. This configuration provides a comfortable ride quality, though it doesn’t offer the same level of handling precision as the X1 models equipped with all-wheel drive. Braking duties are handled by ventilated disc brakes on all four wheels. ABS (Anti-lock Braking System) is standard, providing enhanced stopping power and stability. The suspension tuning is geared towards comfort, with relatively soft spring rates and dampers.
Market Reception & Comparison
The X1 18i was generally well-received as an affordable and efficient entry point into the BMW X1 range. Critics praised its fuel economy and comfortable ride, but noted its lack of outright performance compared to higher-powered variants. Compared to the X1 20i, which featured a more powerful 2.0-liter engine, the 18i offered lower running costs but a less engaging driving experience. The diesel-powered X1 variants, such as the 18d, provided even better fuel economy but with a different engine character. The 18i appealed to buyers who prioritized practicality and fuel efficiency over sporty driving dynamics.
Legacy
The B38 engine, found in the X1 18i, has proven to be a relatively reliable unit, though some owners have reported issues with the timing chain and oil leaks. The 7-speed Steptronic transmission is also generally considered durable, but regular maintenance is crucial to ensure its longevity. On the used car market, the X1 18i represents a relatively affordable option for those seeking a premium compact SUV. Its fuel efficiency and comfortable ride make it a practical choice for daily commuting and family transportation. However, potential buyers should be aware of the potential for timing chain issues and ensure the vehicle has been properly maintained.
