The BMW X4 (G02) 20d xDrive Steptronic, produced from 2018 to 2020, represents a compelling entry point into the luxury compact Sports Activity Coupe (SAC) segment. Positioned as a diesel-powered variant within the G02 X4 generation, it offered a balance of performance, efficiency, and practicality for buyers seeking a more economical alternative to the higher-output gasoline engines. This model aimed to appeal to customers prioritizing fuel economy and torque for everyday driving and occasional long journeys, while still benefiting from BMW’s xDrive all-wheel-drive system and premium interior appointments.
Technical Specifications
| Brand | BMW |
| Model | X4 |
| Generation | X4 (G02) |
| Type (Engine) | 20d (190 Hp) xDrive Steptronic |
| Start of production | 2018 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAC |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 5.9-6.3 l/100 km (39.9 – 37.3 US mpg, 47.9 – 44.8 UK mpg, 16.9 – 15.9 km/l) |
| Fuel consumption (extra urban) | 5.1-5.3 l/100 km (46.1 – 44.4 US mpg, 55.4 – 53.3 UK mpg, 19.6 – 18.9 km/l) |
| Fuel consumption (combined) | 5.4-5.6 l/100 km (43.6 – 42 US mpg, 52.3 – 50.4 UK mpg, 18.5 – 17.9 km/l) |
| CO2 emissions | 142-149 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8 sec |
| Acceleration 0 – 62 mph | 8 sec |
| Acceleration 0 – 60 mph | 7.6 sec |
| Maximum speed | 213 km/h (132.35 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 9.2 kg/Hp, 109.2 Hp/tonne |
| Weight-to-torque ratio | 4.4 kg/Nm, 229.9 Nm/tonne |
| Power | 190 Hp @ 4000 rpm |
| Torque | 400 Nm @ 1750-2500 rpm (295.02 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B47D20B |
| 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 | 11:1 |
| 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 | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1740 kg (3836.04 lbs.) |
| Max. weight | 2400 kg (5291.09 lbs.) |
| Max load | 660 kg (1455.05 lbs.) |
| Trunk (boot) space – minimum | 525 l (18.54 cu. ft.) |
| Trunk (boot) space – maximum | 1430 l (50.5 cu. ft.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 UK gal) |
| Max. roof load | 100 kg (220.46 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 | 100 kg (220.46 lbs.) |
| Length | 4752 mm (187.09 in.) |
| Width | 1918 mm (75.51 in.) |
| Width including mirrors | 2138 mm (84.17 in.) |
| Height | 1621 mm (63.82 in.) |
| Wheelbase | 2864 mm (112.76 in.) |
| Front track | 1620 mm (63.78 in.) |
| Rear (Back) track | 1666 mm (65.59 in.) |
| Front overhang | 861 mm (33.9 in.) |
| Rear overhang | 1027 mm (40.43 in.) |
| Ride height (ground clearance) | 204 mm (8.03 in.) |
| Drag coefficient (Cd) | 0.30 |
| Minimum turning circle (turning diameter) | 12.1 m (39.7 ft.) |
| Wading depth | 500 mm (19.69 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Double wishbone |
| 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 | 225/60 R18 |
| Wheel rims size | 7J x 18 |
Powertrain & Engine Architecture
The heart of the X4 20d is BMW’s B47D20B 2.0-liter inline-four cylinder diesel engine. This engine is a member of the modular BMW engine family, known for its efficiency and refinement. Utilizing a common-rail direct injection system, the B47D20B delivers fuel directly into the combustion chamber at extremely high pressure, optimizing combustion and reducing emissions. The engine is turbocharged with a twin-scroll turbocharger, enhancing responsiveness and broadening the torque curve. An intercooler further cools the intake air, increasing power output. The 8-speed Steptronic automatic transmission, a staple of modern BMWs, provides smooth and efficient gear changes. This transmission is known for its quick shifts and adaptive learning capabilities, adjusting shift points based on driving style. The xDrive all-wheel-drive system intelligently distributes power between the front and rear axles, providing enhanced traction and stability in various driving conditions.
Driving Characteristics
The 190 horsepower and 400 Nm (295 lb-ft) of torque produced by the 20d powertrain provide adequate performance for everyday driving. Acceleration from 0-60 mph takes approximately 7.6 seconds, and the car feels responsive in most situations. However, compared to the more powerful X4 variants, such as the xDrive30i or M40i, the 20d feels less eager to accelerate. The automatic transmission is well-tuned, offering smooth shifts and contributing to a comfortable driving experience. The xDrive system provides excellent grip, particularly in inclement weather. The gear ratios are optimized for fuel efficiency, resulting in relaxed cruising at highway speeds. While not a sports car, the X4 20d offers a composed and confident driving experience, prioritizing comfort and efficiency over outright performance.
Equipment & Trim Levels
The X4 20d xDrive Steptronic typically came equipped with a generous array of standard features. These included BMW’s iDrive infotainment system with a central display screen, automatic climate control, power-adjustable front seats, and a leather-wrapped steering wheel. Standard safety features included ABS, stability control, and multiple airbags. Optional extras included features such as a panoramic sunroof, upgraded leather upholstery, a premium sound system, and advanced driver-assistance systems like adaptive cruise control and lane departure warning. Trim levels varied by market, but generally offered packages that bundled popular options together.
Chassis & Braking
The X4 20d utilizes a double-wishbone front suspension and an independent multi-link rear suspension, providing a comfortable and controlled ride. The suspension is tuned to balance handling and comfort, offering a good compromise for everyday driving. Ventilated disc brakes are fitted on all four wheels, providing ample stopping power. The electronic stability control system helps to maintain control during emergency braking maneuvers. The X4’s chassis is relatively lightweight, contributing to its agility and fuel efficiency.
Market Reception & Comparison
The X4 20d was generally well-received by automotive critics as a practical and efficient option within the X4 lineup. Reviewers praised its fuel economy, comfortable ride, and refined engine. However, some critics noted that the 20d lacked the outright performance of its more powerful siblings. Compared to the X4 xDrive30i, the 20d offered significantly better fuel economy but slower acceleration. The 20d also provided a more affordable entry point into the X4 range, making it an attractive option for budget-conscious buyers. Its reliability was generally considered good, typical of BMW diesel engines, though preventative maintenance was crucial.
Legacy
The BMW X4 (G02) 20d xDrive Steptronic has established itself as a reliable and fuel-efficient option in the used car market. The B47 engine, while known for potential timing chain issues if not properly maintained, is generally durable. The Steptronic transmission has also proven to be reliable. These vehicles continue to appeal to buyers seeking a premium compact SUV with good fuel economy and all-wheel-drive capability. The X4 20d represents a well-rounded package that balances performance, efficiency, and practicality, making it a popular choice for those seeking a versatile and refined driving experience.
