The BMW X7 (G07) 40d, introduced with the facelift in August 2022, represents a significant iteration of BMW’s full-size luxury Sport Activity Vehicle (SAV). Positioned as a mid-range offering within the X7 lineup, it slots between the entry-level xDrive40i and the high-performance M60i. This variant combines a 3.0-liter inline-six diesel engine with mild hybrid technology and BMW’s xDrive all-wheel-drive system, paired with an 8-speed Steptronic automatic transmission. The 40d aims to balance performance, efficiency, and refinement for buyers seeking a spacious and capable luxury SUV.
Technical Specifications
| Brand | BMW |
| Model | X7 |
| Generation | X7 (G07, facelift 2022) |
| Type | 40d (352 Hp) Mild Hybrid xDrive Steptronic |
| Start of production | August, 2022 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SAV |
| Seats | 6-7 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 7.6-8.7 l/100 km (30.9 – 27 US mpg, 37.2 – 32.5 UK mpg, 13.2 – 11.5 km/l) |
| CO2 emissions (WLTP) | 200-230 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.1 sec |
| Acceleration 0 – 62 mph | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 243 km/h (150.99 mph) |
| Battery voltage | 48 V |
| Electric motor power | 12 Hp |
| Electric motor Torque | 200 Nm (147.51 lb.-ft.) |
| Electric motor location | Integrated into the transmission |
| System power | 352 Hp |
| System torque | 720 Nm (531.04 lb.-ft.) |
| Power | 340 Hp @ 4400 rpm |
| Torque | 700 Nm @ 1750-2250 rpm (516.29 lb.-ft. @ 1750-2250 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B57 |
| 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.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-power turbo, Intercooler |
| Length | 5162 mm (203.23 in.) |
| Width | 2000 mm (78.74 in.) |
| Height | 1819 mm (71.61 in.) |
| Wheelbase | 3105 mm (122.24 in.) |
| Drivetrain Architecture | All wheel drive (4×4). ICE and electric motor drive all four wheels. |
| Number of gears | 8 |
| Type of gearbox | 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 heart of the X7 40d is BMW’s B57D30 inline-six diesel engine. This engine utilizes a sophisticated common-rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The B57 features a variable geometry turbocharger and an intercooler, enhancing both power and efficiency. The mild hybrid system, operating at 48V, incorporates a starter-generator that provides a power boost during acceleration and allows for extended coasting with the engine switched off, improving fuel economy. The 8-speed Steptronic automatic transmission is a key component, offering smooth and responsive gear changes. It’s programmed to adapt to driving style and conditions, and includes features like launch control and shift paddles for manual control.
Driving Characteristics
The X7 40d delivers a refined and powerful driving experience. The 720 Nm (531 lb-ft) of combined torque, courtesy of the diesel engine and the mild hybrid system, provides strong acceleration from low engine speeds. The 0-60 mph time of around 5.8 seconds is respectable for a vehicle of this size and weight. The Steptronic transmission contributes to seamless gear changes, and the xDrive all-wheel-drive system ensures excellent traction in various conditions. Compared to the xDrive40i (gasoline), the 40d offers superior torque and fuel economy. While not as overtly sporty as the M60i, the 40d provides ample power for comfortable highway cruising and confident overtaking. The suspension is tuned for comfort, absorbing bumps effectively while maintaining good body control.
Equipment & Trim Levels
The X7 40d comes standard with a high level of equipment, reflecting its luxury positioning. Standard features typically include BMW’s iDrive infotainment system with a large touchscreen display, premium leather upholstery, power-adjustable front seats with memory function, a panoramic sunroof, and a comprehensive suite of driver-assistance systems such as lane departure warning, forward collision warning, and automatic emergency braking. Optional extras include upgraded leather options, rear-seat entertainment systems, Bowers & Wilkins surround sound system, and various customization options for interior trim and exterior styling. The 40d trim often serves as a base for further personalization through BMW’s Individual program.
Chassis & Braking
The X7 40d utilizes a robust chassis designed to handle its substantial weight. The front suspension features a double wishbone setup, while the rear employs an independent multi-link suspension. This configuration provides a comfortable ride and precise handling. The X7 40d is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The braking system is augmented by ABS (Anti-lock Braking System), electronic brake-force distribution, and brake assist. Available options include larger brake rotors and calipers for enhanced performance. The vehicle also features optional 4-wheel steering, which improves maneuverability at low speeds and stability at high speeds.
Market Reception & Comparison
The X7 40d has been generally well-received by automotive critics. Reviewers praise its refined driving experience, spacious interior, and luxurious features. The diesel engine is noted for its strong torque and fuel efficiency, making it a practical choice for long-distance travel. Compared to the gasoline-powered xDrive40i, the 40d offers better fuel economy and a more relaxed driving experience, although the gasoline engine provides slightly quicker acceleration. Against competitors like the Mercedes-Benz GLS and Audi Q7, the X7 40d is often seen as offering a compelling combination of luxury, performance, and technology. Some criticisms have focused on the vehicle’s large size and relatively high price.
Legacy
The B57 engine family, including the version used in the X7 40d, has a reputation for reliability and durability. While diesel engines generally require more diligent maintenance than gasoline engines, the B57 has proven to be a robust and long-lasting powerplant. The mild hybrid system adds a layer of complexity, but BMW’s implementation has been generally reliable. As the X7 40d enters the used car market, it is expected to hold its value well due to its desirable features and strong reputation. The combination of luxury, performance, and efficiency makes it a compelling option for buyers seeking a premium full-size SUV.
