The BMW X4 (G02 LCI), specifically the 30i xDrive Steptronic variant, represents a mid-cycle refresh of the second-generation X4, introduced in August 2021. This model blends the practicality of a compact SUV with the styling of a coupe, targeting buyers seeking a more dynamic and visually striking vehicle than traditional sport utility offerings. Positioned as a mid-range offering within the X4 lineup, the 30i serves as a balance between performance and efficiency, slotting below the more powerful M40i and above any potential base-level engine options. It builds upon the foundation of the G02 platform, shared with the BMW 3 Series, offering a sophisticated driving experience and a premium interior.
Technical Specifications
| Brand | BMW |
| Model | X4 |
| Generation | X4 (G02 LCI, facelift 2021) |
| Type (Engine) | 30i (248 Hp) xDrive Steptronic |
| Start of production | August, 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAC (Sports Activity Coupe) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban (EPA) | 11.2 l/100 km (21 US mpg, 25.2 UK mpg, 8.9 km/l) |
| Fuel consumption (economy) – extra urban (EPA) | 8.7 l/100 km (27 US mpg, 32.5 UK mpg, 11.5 km/l) |
| Fuel consumption (economy) – combined (EPA) | 9.8 l/100 km (24 US mpg, 28.8 UK mpg, 10.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 6 sec |
| Maximum speed | 210 km/h (130.49 mph), Electronically limited |
| Weight-to-power ratio | 7.6 kg/Hp, 130.9 Hp/tonne |
| Weight-to-torque ratio | 5.4 kg/Nm, 184.7 Nm/tonne |
| Power | 248 Hp @ 5200-6500 rpm |
| Power per litre | 124.1 Hp/l |
| Torque | 350 Nm @ 1450-4800 rpm (258.15 lb.-ft. @ 1450-4800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B46B20O1 |
| 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 |
| Valvetrain | VALVETRONIC, Double VANOS |
| Engine oil capacity | 5.25 l (5.55 US qt | 4.62 UK qt) |
| Kerb Weight | 1895 kg (4177.76 lbs.) |
| Max. weight | 2440 kg (5379.28 lbs.) |
| Max load | 545 kg (1201.52 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) |
| Length | 4764 mm (187.56 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 | 1621 mm (63.82 in.) |
| Rear (Back) track | 1666 mm (65.59 in.) |
| Front overhang | 870 mm (34.25 in.) |
| Rear overhang | 1030 mm (40.55 in.) |
| Ride height (ground clearance) | 203 mm (7.99 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle (turning diameter) | 12.1 m (39.7 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Spring Strut, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| 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 | Front wheel tires: 225/60 R18; 245/50 R19; 245/45 R20; 245/40 R21Rear wheel tires: 225/60 R18; 245/50 R19; 275/40 R20; 275/35 R21 |
| Wheel rims size | Front wheel rims: 7J x 18; 7.5J x 19; 8J x 20; 8.5J x 21Rear wheel rims: 7J x 18; 7.5J x 19; 9.5J x 20; 9.5J x 21 |
Powertrain & Engine Architecture
At the heart of the X4 30i lies the BMW B46B20O1 2.0-liter inline-four cylinder engine. This engine is a member of BMW’s modular engine family, utilizing a direct injection system and a single twin-scroll turbocharger. The engine benefits from BMW’s VALVETRONIC technology, which allows for precise control of valve lift and timing, optimizing both power and efficiency. The B46 engine produces 248 horsepower at 5200-6500 rpm and 350 Nm (258 lb-ft) of torque between 1450 and 4800 rpm. This power is delivered to all four wheels via BMW’s xDrive all-wheel-drive system and an 8-speed Steptronic automatic transmission. The Steptronic transmission offers smooth and quick shifts, with the ability for the driver to manually select gears if desired.
Driving Characteristics
The X4 30i xDrive Steptronic offers a comfortable and engaging driving experience. The 2.0-liter engine provides adequate power for everyday driving and highway cruising, with the 0-60 mph sprint taking approximately 6 seconds. While not as overtly sporty as the M40i, the 30i delivers a responsive feel, thanks to the turbocharger and the well-tuned automatic transmission. The xDrive system provides excellent traction in various weather conditions. The transmission’s gear ratios are optimized for both acceleration and fuel economy, with taller gears for relaxed highway driving and shorter gears for quicker response. Compared to a manual transmission equipped X4, the Steptronic offers convenience and ease of use, but may sacrifice some driver engagement.
Equipment & Trim Levels
The X4 30i typically comes well-equipped as standard. Common features include BMW’s iDrive infotainment system with a touchscreen display, navigation, Apple CarPlay and Android Auto compatibility, automatic climate control, and a suite of advanced driver-assistance systems such as lane departure warning and forward collision warning. Interior upholstery is typically a combination of leatherette and cloth, with optional upgrades to full leather available. Optional extras often include a premium sound system, a panoramic sunroof, heated seats, and adaptive cruise control. The LCI (Life Cycle Impulse) facelift introduced in 2021 brought updated styling cues, including revised headlights and taillights, as well as interior enhancements.
Chassis & Braking
The X4 30i utilizes a sophisticated chassis design, featuring a MacPherson strut front suspension and a multi-link rear suspension. This setup provides a good balance between ride comfort and handling precision. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. The electronic stability control (ESC) system works in conjunction with the xDrive all-wheel-drive system to maintain stability and control in challenging driving conditions.
Market Reception & Comparison
The X4 30i was generally well-received by automotive critics, who praised its stylish design, comfortable interior, and engaging driving dynamics. Fuel economy was considered reasonable for its class, with combined figures around 24 US mpg. Compared to the X4 M40i, the 30i offers a more affordable entry point into the X4 range, albeit with less power. Against competitors such as the Porsche Macan and Audi Q5 Sportback, the X4 30i offers a compelling combination of performance, luxury, and practicality. Reliability reports suggest that the B46 engine is generally reliable, although preventative maintenance is crucial.
Legacy
The BMW X4 (G02) 30i xDrive Steptronic represents a popular choice in the luxury compact SUV segment. The B46 engine, paired with the 8-speed Steptronic transmission, has proven to be a durable and capable powertrain. On the used car market, these models hold their value relatively well, particularly those with low mileage and a comprehensive service history. The X4’s distinctive styling and refined driving experience continue to appeal to buyers seeking a sporty and sophisticated SUV.
