The BMW X7 (G07) 30d xDrive Steptronic, produced from 2018 to 2020, marked BMW’s entry into the full-size luxury SUV segment with a diesel powertrain option. Positioned as a more fuel-efficient alternative to the higher-performance X7 40i and M50i models, the 30d aimed to balance luxury, space, and reasonable running costs, primarily targeting European and select international markets. It was built on BMW’s modular CLAR platform, shared with models like the X5 and 7 Series, emphasizing lightweight construction and adaptability. This variant offered seating for six or seven passengers and became a key volume seller within the X7 range, particularly in Europe where diesel engines remained popular.
Technical Specifications
| Brand | BMW |
| Model | X7 |
| Generation | X7 (G07) |
| Type (Engine) | 30d (265 Hp) xDrive Steptronic |
| Start of production | 2018 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 6-7 |
| Doors | 5 |
| Fuel consumption (combined) | 6.5-6.8 l/100 km (36.2 – 34.6 US mpg, 43.5 – 41.5 UK mpg, 15.4 – 14.7 km/l) |
| CO2 emissions | 171-178 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7 sec |
| Acceleration 0 – 62 mph | 7 sec |
| Acceleration 0 – 60 mph | 6.7 sec |
| Maximum speed | 227 km/h (141.05 mph) |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 8.9 kg/Hp, 111.8 Hp/tonne |
| Weight-to-torque ratio | 3.8 kg/Nm, 261.6 Nm/tonne |
| Power | 265 Hp @ 4000 rpm |
| Power per litre | 88.5 Hp/l |
| Torque | 620 Nm @ 2000-2500 rpm (457.29 lb.-ft. @ 2000-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B57D30A |
| 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 | 12 l (12.68 US qt | 10.56 UK qt) |
| Kerb Weight | 2370 kg (5224.96 lbs.) |
| Max. weight | 3220 kg (7098.88 lbs.) |
| Max load | 850 kg (1873.93 lbs.) |
| Trunk (boot) space – minimum | 326 l (11.51 cu. ft.) |
| Trunk (boot) space – maximum | 2120 l (74.87 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%) | 2200 kg (4850.17 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 140 kg (308.65 lbs.) |
| Length | 5151 mm (202.8 in.) |
| Width | 2000 mm (78.74 in.) |
| Width including mirrors | 2218 mm (87.32 in.) |
| Height | 1805 mm (71.06 in.) |
| Wheelbase | 3105 mm (122.24 in.) |
| Front track | 1684 mm (66.3 in.) |
| Rear (Back) track | 1705 mm (67.13 in.) |
| Front overhang | 874 mm (34.41 in.) |
| Rear overhang | 1172 mm (46.14 in.) |
| Ride height (ground clearance) | 221 mm (8.7 in.) |
| Drag coefficient (Cd) | 0.33 |
| Minimum turning circle | 13.0 m (42.65 ft.) |
| Approach angle | 25° |
| Departure angle | 22.2° |
| Ramp-over angle | 19.8° |
| 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 |
Powertrain & Engine Architecture
The X7 30d is powered by BMW’s B57D30A 3.0-liter inline-six diesel engine. This engine is a member of the modular B-series engine family, known for its robust construction and advanced technology. The B57 features a cast iron block, aluminum cylinder head, and four valves per cylinder. It employs a sophisticated common-rail direct injection system operating at extremely high pressures (2,500 bar) for optimized fuel atomization and combustion efficiency. A twin-scroll turbocharger with variable geometry turbine (VGT) technology provides a broad torque curve and minimizes turbo lag. The engine also incorporates an intercooler to further enhance intake air density. The eight-speed Steptronic automatic transmission, a BMW staple, is specifically tuned for the diesel engine’s torque characteristics. It offers smooth and quick shifts, contributing to both performance and fuel economy. The transmission features a torque converter lockup clutch that engages in most driving situations to improve efficiency.
Driving Characteristics
The X7 30d, with its 265 horsepower and 620 Nm (457 lb-ft) of torque, delivers a comfortable and capable driving experience. While not as overtly sporty as the gasoline-powered variants, the 30d offers ample power for effortless highway cruising and confident overtaking. Acceleration from 0-60 mph takes approximately 6.7 seconds. The eight-speed automatic transmission is well-matched to the engine, providing smooth gear changes and keeping the engine within its optimal torque band. The xDrive all-wheel-drive system provides excellent traction in various conditions, enhancing stability and control. Compared to the X7 40i, the 30d feels less eager to rev, but its abundant low-end torque makes it feel strong in everyday driving situations. A manual transmission option was available in some markets, offering a more engaging driving experience, but the automatic was the more popular choice due to its convenience and refinement.
Equipment & Trim Levels
The X7 30d typically came well-equipped as standard, reflecting its luxury SUV positioning. Standard features included leather upholstery, power-adjustable front seats with memory function, a panoramic sunroof, a premium sound system, and a comprehensive suite of driver-assistance systems such as lane departure warning, forward collision warning, and automatic emergency braking. Optional extras included upgraded leather trim, individual rear seats with massage function, a rear-seat entertainment system, and a variety of cosmetic enhancements. Trim levels varied by market, but generally followed a progression from base models to higher-spec versions with more luxurious appointments and advanced technology features. The interior design emphasized spaciousness and comfort, with high-quality materials and a modern aesthetic.
Chassis & Braking
The X7 30d utilizes a double-wishbone front suspension and an independent multi-link rear suspension, providing a comfortable and controlled ride. Air suspension was often included as standard or an optional extra, further enhancing ride quality and allowing for adjustable ride height. The X7 30d features ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS), electronic stability control (ESC), and traction control are standard safety features. The steering system is an electric power steering system, offering precise and responsive steering feel. The chassis is designed to minimize body roll and provide a stable platform for confident handling.
Market Reception & Comparison
The X7 30d was generally well-received by automotive critics, who praised its spacious interior, comfortable ride, and fuel efficiency. The diesel engine was seen as a good match for the X7’s size and weight, providing ample power without sacrificing economy. Compared to the X7 40i, the 30d offered better fuel economy, making it a more practical choice for long-distance driving. However, some critics noted that the 30d lacked the outright performance of its gasoline-powered sibling. In terms of reliability, the B57 engine has proven to be a durable and dependable unit, although diesel particulate filter (DPF) issues can occur with frequent short trips.
Legacy
The BMW X7 30d represents a significant step in BMW’s expansion into the full-size luxury SUV market. The B57 engine has become a mainstay in BMW’s diesel lineup, known for its reliability and efficiency. On the used car market, the X7 30d offers a compelling value proposition, providing a luxurious and spacious SUV with reasonable running costs. Well-maintained examples continue to command respectable prices, reflecting the X7’s overall quality and desirability. The combination of a powerful diesel engine, a comfortable chassis, and a well-appointed interior has ensured that the X7 30d remains a popular choice for buyers seeking a premium SUV experience.
