The BMW 740d xDrive Steptronic, produced between 2015 and 2019 as part of the G11 generation of the 7 Series, represented a significant offering in the large luxury sedan segment. Positioned as a diesel-powered alternative within the 7 Series lineup, it aimed to deliver a blend of performance, efficiency, and refinement. This variant catered to buyers seeking the prestige of the 7 Series with the long-distance comfort and fuel economy benefits of a modern diesel engine. It occupied a mid-range position in the G11 series, slotting below the higher-performance 750i and M760i models, but offering a more economical option than its gasoline counterparts.
Technical Specifications
| Brand | BMW |
| Model | 7 Series |
| Generation | 7 Series (G11) |
| Type (Engine) | 740d (320 Hp) xDrive Steptronic |
| Start of production | 2015 year |
| End of production | 2019 year |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban | 6.2-6.6 l/100 km (37.9 – 35.6 US mpg, 45.6 – 42.8 UK mpg, 16.1 – 15.2 km/l) |
| Fuel consumption (economy) – extra urban | 4.2-4.5 l/100 km (56 – 52.3 US mpg, 67.3 – 62.8 UK mpg, 23.8 – 22.2 km/l) |
| Fuel consumption (economy) – combined | 4.9-5.3 l/100 km (48 – 44.4 US mpg, 57.6 – 53.3 UK mpg, 20.4 – 18.9 km/l) |
| CO2 emissions | 129-139 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) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5.8 kg/Hp, 172 Hp/tonne |
| Weight-to-torque ratio | 2.7 kg/Nm, 365.6 Nm/tonne |
| Power | 320 Hp @ 4000 rpm |
| Power per litre | 106.9 Hp/l |
| Torque | 680 Nm @ 1750-2250 rpm (501.54 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.) |
| 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 | 11.9 l (12.57 US qt | 10.47 UK qt) |
| Kerb Weight | 1860 kg (4100.6 lbs.) |
| Max. weight | 2530 kg (5577.7 lbs.) |
| Max load | 670 kg (1477.1 lbs.) |
| Trunk (boot) space – minimum | 515 l (18.19 cu. ft.) |
| Fuel tank capacity | 78 l (20.61 US gal | 17.16 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2300 kg (5070.63 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 5098 mm (200.71 in.) |
| Width | 1902 mm (74.88 in.) |
| Height | 1478 mm (58.19 in.) |
| Wheelbase | 3070 mm (120.87 in.) |
| Front track | 1617 mm (63.66 in.) |
| Rear (Back) track | 1646 mm (64.8 in.) |
| Ride height (ground clearance) | 135 mm (5.31 in.) |
| Drag coefficient (Cd) | 0.25 |
| Minimum turning circle (turning diameter) | 12.5 m (41.01 ft.) |
| 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 |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 225/60 R17 99Y; 245/50 R18; 245/45 R19; 275/40 R19; 245/40 R20; 275/35 R20; 245/35 R21; 275/30 R21 |
| Wheel rims size | 7.5J x 17; 8J x 18; 8.5J x 19; 9.5J x 19; 8.5J x 20; 10J x 20; 8.5J x 21; 10J x 21 |
INTRODUCTION
The BMW 740d xDrive Steptronic, launched in 2015, was a key component of the G11 7 Series range. Built on the modular architecture of the 31 platform (also used for models like the G30 5 Series), the 740d aimed to provide a luxurious and efficient grand touring experience. It represented BMW’s commitment to offering diesel options in its flagship sedan, particularly appealing to European markets where diesel engines held a significant market share. The G11 generation marked a shift towards increased use of lightweight materials, such as carbon fiber reinforced plastic (CFRP) in the structural elements, contributing to both weight reduction and improved rigidity.
Powertrain & Engine Architecture
At the heart of the 740d lies the B57D30B, a 3.0-liter inline-six diesel engine. This engine is a member of BMW’s modular engine family, known for its robust construction and advanced technology. The B57 features a common-rail direct injection system operating at extremely high pressures (2,200 bar) for optimized combustion and reduced emissions. It employs a variable geometry turbocharger (VGT) and an intercooler to maximize power and torque output. The engine also incorporates BMW’s BluePower technology, including a diesel particulate filter and NOx catalyst to meet stringent Euro 6 emission standards. The eight-speed Steptronic automatic transmission, a hallmark of BMW’s driving experience, is paired with the engine. This transmission offers smooth and rapid gear changes, contributing to both performance and efficiency. The xDrive all-wheel-drive system distributes power between the front and rear axles for enhanced traction and stability in all weather conditions.
Driving Characteristics
The 740d xDrive Steptronic delivers a refined and effortless driving experience. The 680 Nm (501.54 lb-ft) of torque available from 1750-2250 rpm provides strong acceleration in all gears. While not as overtly sporty as the gasoline-powered 750i, the 740d offers a 0-60 mph time of around 4.9 seconds, which is more than adequate for most drivers. The eight-speed automatic transmission is well-tuned, providing seamless shifts and contributing to a relaxed cruising experience. The xDrive system ensures confident handling in various conditions, while the adaptive suspension (often equipped as standard or an option) further enhances ride comfort. Compared to the 730d, the 740d offers a noticeable performance upgrade, while remaining more fuel-efficient than the 750i.
Equipment & Trim Levels
The 740d xDrive Steptronic came generously equipped, reflecting its position as a flagship luxury sedan. Standard features typically included leather upholstery, power-adjustable front seats with memory function, a premium sound system, a large infotainment screen with iDrive controller, and a comprehensive suite of safety features. Optional extras included features like massaging seats, a rear entertainment system, a panoramic sunroof, and advanced driver-assistance systems such as adaptive cruise control and lane-keeping assist. Interior trim options ranged from elegant wood veneers to modern aluminum accents. The dashboard layout was characterized by a clean and sophisticated design, with a focus on intuitive controls and high-quality materials.
Chassis & Braking
The G11 7 Series utilized a sophisticated chassis design incorporating lightweight materials like aluminum and CFRP. The front suspension featured a double-wishbone setup, while the rear employed an independent multi-link suspension. This configuration provided a comfortable ride and precise handling. The 740d typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability control (ESC) system and anti-lock braking system (ABS) worked in conjunction to enhance safety and control. The steering system was a rack-and-pinion setup with electric power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The 740d xDrive Steptronic was generally well-received by automotive critics. It was praised for its refined driving experience, fuel efficiency, and luxurious interior. While some reviewers noted that the diesel engine lacked the aural excitement of a gasoline engine, the 740d was considered a compelling alternative for buyers prioritizing efficiency and long-distance comfort. Compared to the 730d, the 740d offered a significant performance boost, making it a more appealing option for those seeking a more dynamic driving experience. Against the 750i, the 740d provided a more economical option without sacrificing too much in terms of luxury or refinement.
Legacy
The B57 engine family, including the B57D30B found in the 740d, has proven to be remarkably reliable. These engines are known for their durability and longevity, provided they are properly maintained. On the used car market, the G11 740d represents a good value proposition, offering a luxurious and well-equipped sedan at a more affordable price point than newer models. However, potential buyers should be aware of the potential maintenance costs associated with a complex luxury vehicle, including the diesel particulate filter and common-rail injection system. Overall, the 740d xDrive Steptronic remains a desirable and capable luxury sedan, offering a compelling blend of performance, efficiency, and refinement.
