The BMW X5 G05 LCI 40d, introduced in August 2023, represents a mid-cycle refresh of the third-generation X5 (G05) Sport Activity Vehicle (SAV). 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. Positioned as a mid-range offering within the X5 lineup, the 40d balances performance, efficiency, and luxury features, appealing to buyers seeking a refined and capable SUV. The LCI (Life Cycle Impulse) facelift brought updated styling, enhanced technology, and refined powertrain options to the X5 range.
Technical Specifications
| Brand | BMW |
| Model | X5 |
| Generation | X5 (G05 LCI, facelift 2023) |
| Type (Engine) | 40d (352 Hp) Mild Hybrid xDrive Steptronic |
| Start of production | August, 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SAV |
| Seats | 5-7 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 7.3-8.4 l/100 km (32.2 – 28 US mpg, 38.7 – 33.6 UK mpg, 13.7 – 11.9 km/l) |
| CO2 emissions (WLTP) | 190-221 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.5 sec |
| Acceleration 0 – 62 mph | 5.5 sec |
| Acceleration 0 – 60 mph | 5.2 sec |
| Maximum speed | 245 km/h (152.24 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 6.4 kg/Hp, 157.1 Hp/tonne |
| Weight-to-torque ratio | 3.1 kg/Nm, 321.4 Nm/tonne |
| Gross battery capacity | 0.4 kWh |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Battery location | Under the front hood |
| Electric motor power | 12 Hp |
| Electric motor Torque | 200 Nm (147.51 lb.-ft.) |
| Electric motor location | Between the combustion engine and 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 | B57D30B |
| 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 |
| Valvetrain | DOHC |
| Kerb Weight | 2240 kg (4938.35 lbs.) |
| Max. weight | 2985 kg (6580.8 lbs.) |
| Max load | 745 kg (1642.44 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) |
| AdBlue tank | 22 l (5.81 US gal, 4.84 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (8%) | 3500 kg (7716.18 lbs.) |
| Permitted trailer load with brakes (12%) | 3500 kg (7716.18 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 140 kg (308.65 lbs.) |
| Length | 4935 mm (194.29 in.) |
| Width | 2004 mm (78.9 in.) |
| Width including mirrors | 2218 mm (87.32 in.) |
| Height | 1765 mm (69.49 in.) |
| Wheelbase | 2975 mm (117.13 in.) |
| Front track | 1677 mm (66.02 in.) |
| Rear (Back) track | 1698 mm (66.85 in.) |
| Front overhang | 887 mm (34.92 in.) |
| Rear overhang | 1073 mm (42.24 in.) |
| Ride height (ground clearance) | 214 mm (8.43 in.) |
| Minimum turning circle (turning diameter) | 12.6 m (41.34 ft.) |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
Powertrain & Engine Architecture
The heart of the X5 40d is BMW’s B57D30B 3.0-liter inline-six diesel engine. This engine utilizes a sophisticated diesel commonrail fuel injection system and a twin-scroll turbocharger with variable geometry turbine (VGT) technology. The addition of a 48V mild hybrid system contributes to improved fuel efficiency and smoother operation. The 48V system incorporates a 12 hp electric motor integrated between the engine and the transmission, providing assistance during acceleration and enabling features like coasting with the engine switched off. The engine produces 340 horsepower at 4400 rpm and a substantial 700 Nm (516 lb-ft) of torque between 1750 and 2250 rpm. The Steptronic 8-speed automatic transmission is specifically tuned to complement the engine’s characteristics, offering smooth and responsive gear changes.
Driving Characteristics
The X5 40d delivers a refined and capable driving experience. The mild hybrid system effectively mitigates turbo lag, resulting in strong and readily available torque from low engine speeds. The 8-speed automatic transmission provides seamless shifts, and the xDrive all-wheel-drive system ensures excellent traction in various conditions. While not as overtly sporty as the X5 M50i, the 40d offers ample power for confident highway cruising and overtaking. The gear ratios are optimized for both fuel efficiency and performance, with a focus on providing a comfortable and relaxed driving experience. Compared to higher-output X5 variants, the 40d prioritizes efficiency and refinement over outright speed.
Equipment & Trim Levels
The X5 40d typically comes well-equipped with standard features including BMW’s iDrive infotainment system with a large touchscreen display, leather upholstery, power-adjustable front seats, automatic climate control, and a comprehensive suite of safety features. Optional extras include features like adaptive air suspension, premium sound systems, panoramic sunroof, and advanced driver-assistance systems such as adaptive cruise control and lane-keeping assist. Trim levels can vary depending on the market, but generally offer increasing levels of luxury and technology.
Chassis & Braking
The X5 40d features a robust chassis with a double-wishbone front suspension and an independent multi-link rear suspension. Adaptive air suspension is available as an option, providing adjustable ride height and damping characteristics for enhanced comfort and handling. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. Standard safety features include ABS, stability control, and traction control.
Market Reception & Comparison
The X5 40d has been well-received by automotive critics for its blend of performance, efficiency, and luxury. It offers a compelling alternative to petrol-powered X5 variants, particularly for drivers who prioritize fuel economy and torque. Compared to the X5 xDrive40i (petrol), the 40d typically delivers better fuel economy and a more relaxed driving experience. The X5 M50i offers significantly more power but at a higher price point and with reduced fuel efficiency. The 40d’s mild hybrid system contributes to improved real-world fuel consumption compared to earlier X5 diesel models.
Legacy
The B57 engine family, including the B57D30B used in the X5 40d, has proven to be a reliable and durable powertrain. While long-term reliability data for the LCI model is still emerging, the B57 engine has a good reputation for longevity and relatively low maintenance costs. The integration of mild hybrid technology further enhances the engine’s efficiency and reduces emissions. As a used vehicle, the X5 40d is expected to hold its value well due to its desirable combination of features and performance.
