The BMW X4 (G02) 30i xDrive Steptronic, produced from 2018 to 2021, represents a compelling entry point into the luxury compact Sports Activity Coupe (SAC) segment. Positioned as a mid-range offering within the G02 X4 lineup, it bridged the gap between the base 20i models and the higher-performance M40i variants. This variant aimed to deliver a balance of performance, efficiency, and practicality, appealing to buyers seeking a stylish and capable SUV with BMW’s renowned driving dynamics. The G02 generation marked the second iteration of the X4, building upon the success of the first generation (F26) with updated styling, technology, and a more refined driving experience.
Technical Specifications
| Brand | BMW |
| Model | X4 |
| Generation | X4 (G02) |
| Type (Engine) | 30i (252 Hp) xDrive Steptronic |
| Start of production | 2018 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAC |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 8.4-8.5 l/100 km (28 – 27.7 US mpg) |
| Fuel consumption (extra urban) | 6.4-6.7 l/100 km (36.8 – 35.1 US mpg) |
| Fuel consumption (combined) | 7.2-7.3 l/100 km (32.7 – 32.2 US mpg) |
| CO2 emissions | 164-168 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.3 sec |
| Acceleration 0 – 62 mph | 6.3 sec |
| Acceleration 0 – 60 mph | 6 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.8 kg/Hp, 146.5 Hp/tonne |
| Weight-to-torque ratio | 4.9 kg/Nm, 203.5 Nm/tonne |
| Power | 252 Hp @ 5200-6500 rpm |
| Power per litre | 126.1 Hp/l |
| Torque | 350 Nm @ 1450-4800 rpm (258.15 lb.-ft. @ 1450-4800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B48B20B |
| Engine displacement | 1998 cm3 (121.93 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Compression ratio | 10.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 5.25 l (5.55 US qt | 4.62 UK qt) |
| Coolant | 12.6 l (13.31 US qt | 11.09 UK qt) |
| Kerb Weight | 1720 kg (3791.95 lbs.) |
| Max. weight | 2400 kg (5291.09 lbs.) |
| Max load | 680 kg (1499.14 lbs.) |
| Trunk (boot) space – minimum | 525 l (18.54 cu. ft.) |
| Trunk (boot) space – maximum | 1430 l (50.5 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 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 30i is BMW’s B48B20B 2.0-liter turbocharged inline-four cylinder engine. This engine is a member of BMW’s modular engine family, known for its efficiency and performance. It utilizes direct fuel injection, a twin-scroll turbocharger, and variable valve timing (VANOS) and valve lift (Valvetronic) technologies to optimize power delivery and fuel economy. The B48 engine produces 252 horsepower at 5200-6500 rpm and 350 Nm (258 lb-ft) of torque between 1450 and 4800 rpm. This power is channeled through an eight-speed Steptronic automatic transmission, which is known for its smooth and quick shifts. The xDrive all-wheel-drive system intelligently distributes power between the front and rear axles, enhancing traction and stability in various driving conditions.
Driving Characteristics
The X4 30i xDrive Steptronic offers a comfortable and engaging driving experience. While not as overtly sporty as the M40i, the 2.0-liter turbo engine provides ample power for everyday driving and confident highway passing. The eight-speed automatic transmission is well-tuned, offering smooth gear changes and responsive kickdowns. The xDrive system provides excellent grip, particularly in inclement weather. Compared to the more powerful M40i, the 30i feels less urgent in its acceleration, but it offers a more fuel-efficient and relaxed driving experience. The gear ratios are optimized for a balance of acceleration and fuel economy, with a focus on providing usable torque in the mid-range.
Equipment & Trim Levels
The X4 30i typically came well-equipped as standard. Common features included BMW’s iDrive infotainment system with a central display screen, automatic climate control, power-adjustable front seats, and a leather-wrapped steering wheel. Optional extras included features like a panoramic sunroof, upgraded leather upholstery, a premium sound system, and various driver-assistance systems such as adaptive cruise control and lane departure warning. Trim levels often included variations in interior trim materials and exterior styling elements.
Chassis & Braking
The G02 X4 features a robust chassis with a double-wishbone front suspension and an independent multi-link rear suspension. This setup provides a comfortable ride while maintaining good handling characteristics. The X4 30i typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability control (ESC) system and anti-lock braking system (ABS) work in conjunction to enhance safety and control.
Market Reception & Comparison
The X4 30i was generally well-received by automotive critics. It was praised for its stylish design, comfortable interior, and balanced driving dynamics. However, some critics noted that the 2.0-liter engine could feel somewhat underpowered for a vehicle of its size and weight, especially when compared to the more potent M40i. Fuel economy was considered to be competitive within its segment. Compared to other luxury compact SUVs, the X4 30i offered a unique blend of sporty styling and practicality.
Legacy
The BMW X4 (G02) 30i xDrive Steptronic has proven to be a reliable and durable vehicle. The B48 engine, while not without its occasional issues (such as potential oil leaks), is generally considered to be a robust and long-lasting powerplant. On the used car market, the X4 30i represents a good value proposition for buyers seeking a luxury SUV with a blend of style, performance, and practicality. Regular maintenance, including oil changes and adherence to BMW’s recommended service intervals, is crucial for ensuring the long-term reliability of this vehicle.
