The BMW X4 (F26) 30d xDrive Steptronic, produced between 2014 and 2018, represents a key variant within the first generation of BMW’s Sports Activity Coupe (SAC) line. Positioned as a mid-range offering in the X4 lineup, it aimed to blend the practicality of a compact SUV with the styling of a coupe. This model was primarily targeted at European and global markets, offering a diesel-powered, all-wheel-drive option for buyers seeking a balance of performance, efficiency, and a sporty driving experience. The F26 X4, built on the BMW F25 platform (shared with the X3), sought to carve out a niche for itself in the burgeoning luxury crossover segment.
Technical Specifications
| Brand | BMW |
| Model | X4 |
| Generation | X4 (F26) |
| Type (Engine) | 30d (258 Hp) xDrive Steptronic |
| Start of production | 2014 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAC |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 6.5 l/100 km (36.2 US mpg, 43.5 UK mpg, 15.4 km/l) |
| Fuel consumption (extra urban) | 5.6 l/100 km (42 US mpg, 50.4 UK mpg, 17.9 km/l) |
| Fuel consumption (combined) | 5.9 l/100 km (39.9 US mpg, 47.9 UK mpg, 16.9 km/l) |
| CO2 emissions | 156 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.8 sec |
| Acceleration 0 – 62 mph | 5.8 sec |
| Acceleration 0 – 60 mph | 5.5 sec |
| Maximum speed | 234 km/h (145.4 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.1 kg/Hp, 141.8 Hp/tonne |
| Weight-to-torque ratio | 3.3 kg/Nm, 307.7 Nm/tonne |
| Power | 258 Hp @ 4000 rpm |
| Torque | 560 Nm @ 1500-3000 rpm (413.03 lb.-ft. @ 1500-3000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | N57D30A |
| Engine displacement | 2993 cm3 (182.64 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 84 mm (3.31 in.) |
| Piston Stroke | 90 mm (3.54 in.) |
| Compression ratio | 16.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 10 l (10.57 US qt | 8.8 UK qt) |
| Kerb Weight | 1820 kg (4012.41 lbs.) |
| Max. weight | 2410 kg (5313.14 lbs.) |
| Max load | 590 kg (1300.73 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Trunk (boot) space – maximum | 1400 l (49.44 cu. ft.) |
| Fuel tank capacity | 67 l (17.7 US gal | 14.74 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2400 kg (5291.09 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 4671 mm (183.9 in.) |
| Width | 1881 mm (74.06 in.) |
| Height | 1624 mm (63.94 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1616 mm (63.62 in.) |
| Rear (Back) track | 1632 mm (64.25 in.) |
| Ride height (ground clearance) | 204 mm (8.03 in.) |
| Drag coefficient (Cd) | 0.34 |
| Minimum turning circle (turning diameter) | 11.9 m (39.04 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 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 | 225/60 R17 99V |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
The heart of the X4 30d is the BMW N57D30A engine, a 3.0-liter inline-six diesel engine. This engine is a member of the highly regarded N57 family, known for its robust construction and refined performance. The N57D30A utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. It’s equipped with a twin-scroll turbocharger and an intercooler, boosting power output and improving throttle response. The engine produces 258 horsepower at 4000 rpm and a substantial 560 Nm (413 lb-ft) of torque between 1500 and 3000 rpm. This broad torque curve is a hallmark of the N57 engine family. Paired with the engine is the ZF 8HP80 eight-speed automatic transmission, marketed by BMW as “Steptronic.” This transmission is renowned for its smooth shifts, efficiency, and adaptability. The xDrive all-wheel-drive system distributes power between the front and rear axles as needed, enhancing traction and stability in various driving conditions.
Driving Characteristics
The X4 30d xDrive Steptronic delivers a composed and refined driving experience. The abundant low-end torque from the N57 engine provides strong acceleration, making it effortless for everyday driving and overtaking maneuvers. While not as overtly sporty as some of its gasoline-powered siblings, the 30d offers a respectable 0-60 mph time of around 5.5 seconds. The eight-speed automatic transmission contributes to a smooth and seamless power delivery, and the xDrive system provides confident handling in all weather conditions. Compared to the higher-output X4 35i (gasoline), the 30d prioritizes fuel efficiency and torque over outright horsepower. The automatic transmission, while smooth, may not offer the same level of driver engagement as the available six-speed manual transmission found in some markets.
Equipment & Trim Levels
The X4 30d typically came well-equipped as standard. Common features included leather upholstery, power-adjustable front seats, dual-zone automatic climate control, a BMW iDrive infotainment system with a 6.5-inch display, and rear parking sensors. Optional extras included a larger iDrive screen, navigation, a premium sound system, panoramic sunroof, adaptive cruise control, and various driver assistance systems. Trim levels varied by market, but generally, the 30d sat in the middle of the X4 range, offering a good balance of luxury and performance. The M Sport package was a popular option, adding more aggressive styling cues, sport seats, and a sport-tuned suspension.
Chassis & Braking
The X4 30d utilizes a MacPherson strut front suspension and a multi-link rear suspension, providing a comfortable yet controlled ride. The suspension is tuned to balance handling and comfort, making it suitable for both city driving and longer journeys. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The X4 30d also features ABS, dynamic stability control (DSC), and other electronic safety systems. The weight distribution is relatively balanced, contributing to the vehicle’s stable handling characteristics.
Market Reception & Comparison
The X4 30d was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and practical interior. However, some critics noted that the X4’s styling was polarizing, and the rear headroom was somewhat limited due to the sloping roofline. Compared to the X4 28i (gasoline), the 30d offered superior fuel economy and torque, making it a more practical choice for drivers who prioritize efficiency and long-distance comfort. Compared to the X4 35i, the 30d sacrificed some horsepower but gained better fuel economy and a more relaxed driving experience.
Legacy
The N57D30A engine has proven to be a durable and reliable powerplant, with many examples exceeding high mileage with proper maintenance. The ZF 8HP80 transmission is also known for its longevity and smooth operation. The F26 X4 30d remains a popular choice in the used car market, offering a compelling combination of luxury, performance, and efficiency. However, potential buyers should be aware of potential issues with the diesel particulate filter (DPF) and the turbocharger, particularly on vehicles that have not been properly maintained. Overall, the X4 30d represents a well-engineered and capable crossover that continues to offer a rewarding driving experience.
