The BMW X5 (G05) M50d, produced from November 2018 to November 2020, represents a performance-oriented variant within the third generation of the X5 Sports Activity Vehicle (SAV). Positioned as a premium offering, the M50d combined a powerful diesel engine with BMW’s xDrive all-wheel-drive system and the Steptronic automatic transmission, offering a blend of luxury, performance, and practicality. Notably, this model was offered with an optional seven-seat configuration, expanding its appeal to larger families. The G05 generation marked a significant evolution for the X5, incorporating updated technology, a more refined interior, and improved driving dynamics.
Technical Specifications
| Brand | BMW |
| Model | X5 |
| Generation | X5 (G05) |
| Type | M50d (400 Hp) xDrive Steptronic 7 Seat |
| Start of production | November, 2018 |
| End of production | November, 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAV |
| Seats | 7 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 8.3-9.1 l/100 km (28.3 – 25.8 US mpg, 34 – 31 UK mpg, 12 – 11 km/l) |
| CO2 emissions (WLTP) | 216-238 g/km |
| Fuel consumption (economy) – urban (NEDC) | 7.6-8.1 l/100 km (30.9 – 29 US mpg, 37.2 – 34.9 UK mpg, 13.2 – 12.3 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 6.3-6.7 l/100 km (37.3 – 35.1 US mpg, 44.8 – 42.2 UK mpg, 15.9 – 14.9 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 6.8-7.2 l/100 km (34.6 – 32.7 US mpg, 41.5 – 39.2 UK mpg, 14.7 – 13.9 km/l) |
| CO2 emissions (NEDC) | 179-190 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.2 sec |
| Acceleration 0 – 62 mph | 5.2 sec |
| Acceleration 0 – 60 mph | 4.9 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 5.9 kg/Hp, 170.2 Hp/tonne |
| Weight-to-torque ratio | 3.1 kg/Nm, 323.4 Nm/tonne |
| Power | 400 Hp @ 4400 rpm |
| Power per litre | 133.6 Hp/l |
| Torque | 760 Nm @ 2000-3000 rpm (560.55 lb.-ft. @ 2000-3000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B57D30C |
| 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 | 16:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-power turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 11.1 l (11.73 US qt | 9.77 UK qt) |
| Kerb Weight | 2350 kg (5180.86 lbs.) |
| Max. weight | 3160 kg (6966.61 lbs.) |
| Max load | 810 kg (1785.74 lbs.) |
| Trunk (boot) space – minimum | 650 l (22.95 cu. ft.) |
| Trunk (boot) space – maximum | 1870 l (66.04 cu. ft.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2700 kg (5952.48 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 140 kg (308.65 lbs.) |
| Length | 4922 mm (193.78 in.) |
| Width | 2004 mm (78.9 in.) |
| Width including mirrors | 2218 mm (87.32 in.) |
| Height | 1745 mm (68.7 in.) |
| Wheelbase | 2975 mm (117.13 in.) |
| Front track | 1680 mm (66.14 in.) |
| Rear (Back) track | 1687 mm (66.42 in.) |
| Front overhang | 874 mm (34.41 in.) |
| Rear overhang | 1073 mm (42.24 in.) |
| Ride height (ground clearance) | 214 mm (8.43 in.) |
| Drag coefficient (Cd) | 0.32 |
| Minimum turning circle (turning diameter) | 12.6 m (41.34 ft.) |
| Approach angle | 25.2° |
| Departure angle | 22.3° |
| Ramp-over (brakeover) angle | 20.2° |
| Wading depth | 500 mm (19.69 in.) |
| 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 | Coil spring, Double wishbone, Transverse stabilizer, Air Suspension – Optional |
| Rear suspension | Independent multi-link spring suspension with stabilizer, Air Suspension – Optional |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
The heart of the X5 M50d is BMW’s B57D30C 3.0-liter inline-six diesel engine. This engine utilizes a sophisticated diesel commonrail fuel injection system and is equipped with a twin-power turbocharger setup, incorporating both a conventional turbocharger and an electrically driven compressor. The latter helps to minimize turbo lag, providing near-instantaneous power delivery. The engine boasts a high compression ratio of 16:1 and a DOHC valvetrain. The B57 engine family is known for its robust construction and ability to handle significant power upgrades. Paired with the engine is the ZF 8HP76 eight-speed automatic transmission, marketed by BMW as ‘Steptronic’. This transmission is renowned for its smooth shifting characteristics and efficiency. The transmission is programmed for both comfort and performance, adapting to the driver’s style.
Driving Characteristics
The X5 M50d delivers a remarkably refined driving experience. The 760 Nm (560 lb-ft) of torque, available from 2000-3000 rpm, provides effortless acceleration in virtually any situation. The 0-60 mph sprint takes approximately 4.9 seconds, making it a genuinely quick SUV. The Steptronic transmission contributes to this performance, offering quick and precise gear changes. Compared to the base X5 models with the 2.0-liter four-cylinder engine, the M50d offers a substantial performance advantage. While the six-cylinder gasoline X5 xDrive40i provides similar acceleration, the M50d’s diesel engine delivers superior fuel economy and a broader torque curve. The xDrive all-wheel-drive system ensures excellent traction and stability, particularly in adverse weather conditions.
Equipment & Trim Levels
The M50d trim level came standard with a comprehensive array of features, reflecting its premium positioning. Standard equipment included leather upholstery, power-adjustable front seats with memory function, a panoramic sunroof, and a premium sound system. BMW’s iDrive infotainment system with a large touchscreen display was also standard, offering navigation, connectivity, and vehicle settings control. Optional extras included upgraded leather options, rear-seat entertainment systems, and advanced driver-assistance features such as adaptive cruise control and lane-keeping assist. The optional seven-seat configuration added versatility, although it slightly reduced cargo space when all seats were in use.
Chassis & Braking
The X5 M50d features a robust chassis designed to handle the engine’s power and provide a comfortable ride. The suspension system consists of coil springs, double wishbones at the front, and an independent multi-link setup at the rear. Air suspension was available as an option, further enhancing ride comfort and allowing for adjustable ride height. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The electronic stability control system (DSC) and anti-lock braking system (ABS) work in conjunction to maintain control in challenging situations.
Market Reception & Comparison
The X5 M50d was generally well-received by automotive critics. It was praised for its powerful engine, refined driving dynamics, and luxurious interior. The combination of performance and fuel efficiency was a particularly strong selling point. Compared to other high-performance SUVs, such as the Porsche Cayenne Diesel, the X5 M50d offered a compelling blend of value and capability. Some critics noted that the ride could be slightly firm, particularly with the sport suspension options. However, the overall consensus was that the M50d represented a significant step forward for the X5 model line.
Legacy
The B57 engine family, including the B57D30C found in the X5 M50d, has proven to be remarkably reliable. While diesel engines can be susceptible to issues with the emissions control systems (such as the diesel particulate filter), the B57 has generally demonstrated good longevity. On the used car market, the X5 M50d holds its value relatively well, reflecting its desirable combination of performance, luxury, and practicality. Proper maintenance, including regular oil changes and adherence to BMW’s recommended service intervals, is crucial for ensuring the long-term reliability of this powertrain. The X5 M50d remains a popular choice for buyers seeking a high-performance SUV with a diesel engine.
