Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series (G70) |
| Type (Engine) | 740d (300 Hp) Mild Hybrid xDrive Steptronic |
| Start of production | November, 2022 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Combined fuel consumption (WLTP) | 6.1-6.8 l/100 km (38.6 – 34.6 US mpg, 46.3 – 41.5 UK mpg, 16.4 – 14.7 km/l) |
| CO2 emissions (WLTP) | 160-178 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 | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 7.3 kg/Hp, 137.6 Hp/tonne |
| Weight-to-torque ratio | 3.3 kg/Nm, 307.3 Nm/tonne |
| Battery voltage | 48 V |
| Battery location | Inside the trunk |
| Electric motor power | 18 Hp |
| Electric motor Torque | 200 Nm (147.51 lb.-ft.) |
| Electric motor location | Integrated into the transmission |
| System power | 300 Hp |
| System torque | 670 Nm (494.17 lb.-ft.) |
| Power | 286 Hp @ 4000 rpm |
| Torque | 650 Nm @ 1500-2500 rpm (479.42 lb.-ft. @ 1500-2500 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.) |
| Compression ratio | 16.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-power turbo, Intercooler |
| Kerb Weight | 2180 kg (4806.08 lbs.) |
| Max. weight | 2895 kg (6382.38 lbs.) |
| Max load | 715 kg (1576.31 lbs.) |
| Trunk (boot) space – minimum | 540 l (19.07 cu. ft.) |
| Fuel tank capacity | 74 l (19.55 US gal | 16.28 UK gal) |
| Permitted trailer load with brakes (12%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 5391 mm (212.24 in.) |
| Width | 1950 mm (76.77 in.) |
| Height | 1544 mm (60.79 in.) |
| Wheelbase | 3215 mm (126.57 in.) |
| Front track | 1662 mm (65.43 in.) |
| Rear (Back) track | 1684 mm (66.3 in.) |
| Ride height (ground clearance) | 147 mm (5.79 in.) |
| Drag coefficient (Cd) | 0.26 |
| Minimum turning circle (turning diameter) | 12.3 m (40.35 ft.) |
| Drivetrain Architecture | ICE and electric motor drive all four wheels, operating in mixed mode. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Double wishbone, Air suspension |
| Rear suspension | Independent multi-link suspension, Air suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS, 4-wheel steering |
| Steering type | Steering rack and pinion |
| Power steering | Electric |
| Tires size | 245/50 R19 105Y XL |
| Wheel rims size | 8.5J x 19 |
The BMW 740d xDrive, launched in November 2022 as part of the G70 generation of the 7 Series, represents BMW’s offering in the luxury diesel sedan segment, incorporating a mild-hybrid powertrain. Positioned as a balance between performance and efficiency within the 7 Series lineup, it sits below the more powerful 760i and the fully electric i7 models. The 740d aims to deliver a refined driving experience with reduced emissions, appealing to buyers who prioritize long-distance comfort and fuel economy without compromising on luxury features. While primarily targeted towards the European and Asian markets, where diesel engines remain popular, it is also available for purchase in North America.
Powertrain & Engine Architecture
At the core of the 740d is BMW’s B57D30 inline-six cylinder diesel engine, boasting a displacement of 2993 cc. This engine benefits from a 48V mild-hybrid system, featuring a starter-generator that provides a power boost during acceleration and enables smoother start-stop functionality. The B57 utilizes a sophisticated diesel commonrail fuel injection system and a twin-scroll turbocharger equipped with variable geometry turbine (VGT) technology, optimizing both power delivery and fuel efficiency. The engine generates 286 horsepower at 4000 rpm and a substantial 650 Nm (479 lb-ft) of torque between 1500 and 2500 rpm. The integrated electric motor contributes an additional 18 hp and 200 Nm of torque. The engine is mounted longitudinally and is paired with an 8-speed Steptronic automatic transmission, renowned for its quick and smooth gear changes. This transmission is specifically calibrated to work seamlessly with the diesel engine and mild-hybrid system.
Driving Characteristics
The 740d xDrive delivers a refined and effortless driving experience. The combination of the diesel engine’s torque and the mild-hybrid system’s boost results in strong acceleration, achieving 0-60 mph in approximately 5.5 seconds. While not as overtly sporty as the gasoline-powered 760i, the 740d offers ample power for comfortable highway cruising and confident overtaking maneuvers. The 8-speed automatic transmission is exceptionally well-tuned, providing seamless gear changes and contributing to the car’s overall smoothness. The xDrive all-wheel-drive system ensures excellent traction in a variety of weather conditions. Compared to the higher-output 7 Series models, the 740d prioritizes fuel economy and relaxed cruising over outright performance.
Equipment & Trim Levels
The 740d xDrive comes standard with a high level of equipment, consistent with its flagship status. Standard features typically include BMW’s iDrive 8 infotainment system with a large curved display, premium leather upholstery, heated and ventilated front seats, a panoramic sunroof, and a comprehensive suite of driver-assistance systems. Optional extras include upgraded sound systems, rear-seat entertainment packages, and a variety of customization options for both interior trim and exterior styling. The 740d can be further enhanced with BMW’s Individual options, allowing buyers to personalize their vehicle to a significant degree.
Chassis & Braking
The G70 7 Series utilizes an advanced chassis design featuring double-wishbone front suspension and a multi-link rear suspension, both incorporating air suspension as standard. This air suspension system provides a comfortable ride quality and allows for adjustable ride height. The 740d is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Standard safety features include ABS, stability control, and a range of driver-assistance systems such as lane departure warning and automatic emergency braking. The 740d also benefits from BMW’s Integral Active Steering system, which provides four-wheel steering for enhanced agility and maneuverability.
Market Reception & Comparison
The 740d xDrive has been generally well-received by automotive critics, praised for its refined driving experience, fuel efficiency, and luxurious interior. It offers a compelling alternative to gasoline-powered rivals, particularly for buyers who prioritize long-distance comfort and reduced running costs. Compared to the 760i, the 740d offers a more economical option without sacrificing a substantial amount of performance. Against competitors like the Mercedes-Benz S 400d, the 740d is often seen as offering a more engaging driving experience and a more technologically advanced interior.
Legacy
The B57 engine family has proven to be remarkably reliable, and the mild-hybrid system adds a layer of refinement and efficiency without compromising durability. While long-term reliability data for the G70 generation is still emerging, the 740d is expected to hold its value well in the used car market due to its combination of luxury, performance, and fuel economy. The 740d represents BMW’s commitment to offering a diverse range of powertrain options in its flagship sedan, catering to the evolving needs and preferences of luxury car buyers.
