The BMW 840d xDrive Gran Coupe (G16) represents a compelling blend of performance and efficiency within the 8 Series lineup, produced from June 2019 through 2020. Positioned as a mid-range offering, it slotted between the entry-level 840i gasoline variant and the high-performance M8. This four-door coupe, built on the G16 platform, aimed to deliver a luxurious grand touring experience with the added practicality of a spacious interior and trunk. The 840d distinguished itself through its potent diesel engine and standard xDrive all-wheel drive system, offering a unique driving character compared to its gasoline-powered siblings.
Technical Specifications
| Brand | BMW |
| Model | 8 Series |
| Generation | 8 Series Gran Coupe (G16) |
| Type (Engine) | 840d (320 Hp) xDrive Steptronic |
| Start of production | June, 2019 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban | 7.3-7.4 l/100 km (32.2 – 31.8 US mpg, 38.7 – 38.2 UK mpg, 13.7 – 13.5 km/l) |
| Fuel consumption (economy) – extra urban | 5.1-5.7 l/100 km (46.1 – 41.3 US mpg, 55.4 – 49.6 UK mpg, 19.6 – 17.5 km/l) |
| Fuel consumption (economy) – combined | 5.9-6.3 l/100 km (39.9 – 37.3 US mpg, 47.9 – 44.8 UK mpg, 16.9 – 15.9 km/l) |
| CO2 emissions | 155-166 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.1 sec |
| Acceleration 0 – 62 mph | 5.1 sec |
| Acceleration 0 – 60 mph | 4.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d-Temp |
| Weight-to-power ratio | 6 kg/Hp, 166.2 Hp/tonne |
| Weight-to-torque ratio | 2.8 kg/Nm, 353.2 Nm/tonne |
| Power | 320 Hp @ 4400 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 | 9.5 l (10.04 US qt | 8.36 UK qt) |
| Kerb Weight | 1925 kg (4243.9 lbs.) |
| Max. weight | 2560 kg (5643.83 lbs.) |
| Max load | 635 kg (1399.94 lbs.) |
| Trunk (boot) space – maximum | 440 l (15.54 cu. ft.) |
| Fuel tank capacity | 68 l (17.96 US gal | 14.96 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Length | 5082 mm (200.08 in.) |
| Width | 1932 mm (76.06 in.) |
| Width including mirrors | 2137 mm (84.13 in.) |
| Height | 1407 mm (55.39 in.) |
| Wheelbase | 3023 mm (119.02 in.) |
| Front track | 1627 mm (64.06 in.) |
| Rear (Back) track | 1671 mm (65.79 in.) |
| Front overhang | 953 mm (37.52 in.) |
| Rear overhang | 1106 mm (43.54 in.) |
| Drag coefficient (Cd) | 0.29 |
| 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 |
| Power steering | Electric Steering |
| Tires size | 245/45 R18 100Y XL; 275/40 R18 103Y XL |
| Wheel rims size | 8J x 18; 9J x 18 |
Powertrain & Engine Architecture
At the heart of the 840d xDrive Gran Coupe lies the BMW B57D30B, a 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 common-rail direct injection system operating at extremely high pressures (2,500 bar) for optimized combustion and reduced emissions. A sophisticated twin-turbocharger setup, incorporating a variable geometry turbocharger (VGT) and a conventional turbocharger, delivers both strong low-end torque and high-end power. The engine also incorporates an intercooler to further enhance efficiency. The eight-speed Steptronic automatic transmission, a BMW staple, is specifically tuned to complement the diesel engine’s torque characteristics. It offers smooth and quick shifts, contributing to both performance and fuel economy. The transmission features a wide gear ratio spread, allowing for both relaxed cruising and responsive acceleration.
Driving Characteristics
The 840d xDrive Gran Coupe delivers a distinctly different driving experience compared to its gasoline counterparts. The high torque output of the diesel engine (680 Nm or 501.54 lb-ft) is available from a low 1750 rpm, providing effortless acceleration in everyday driving situations. While not as outright quick as the 840i, the 840d’s 0-60 mph time of around 4.8 seconds is still remarkably swift for a large, luxurious coupe. The xDrive all-wheel drive system provides excellent traction and stability, particularly in adverse weather conditions. The Steptronic transmission’s programming prioritizes smooth shifts and fuel efficiency in normal driving modes, but can be quickly shifted into Sport mode for more aggressive responses. Compared to manual transmission options (not offered on this variant), the automatic provides a more relaxed and convenient driving experience, though some enthusiasts may miss the greater driver engagement of a manual gearbox.
Equipment & Trim Levels
The 840d xDrive Gran Coupe came well-equipped as standard, reflecting its positioning as a luxury vehicle. Standard features typically included leather upholstery, power-adjustable front seats with memory function, a premium sound system, a large infotainment display with iDrive controller, and a comprehensive suite of safety features such as automatic emergency braking, lane departure warning, and adaptive cruise control. Optional extras included upgraded leather options, a Bowers & Wilkins Diamond surround sound system, a head-up display, and various driver-assistance systems. Interior trim options ranged from elegant wood veneers to modern carbon fiber accents. The Gran Coupe’s four-door configuration offered enhanced practicality compared to the 8 Series Coupe, with easier access to the rear seats.
Chassis & Braking
The 840d xDrive Gran Coupe utilizes a sophisticated chassis design focused on providing a comfortable yet engaging driving experience. The front suspension features a double-wishbone setup, while the rear employs an independent multi-link suspension. This configuration minimizes body roll and maximizes ride comfort. The xDrive all-wheel drive system intelligently distributes torque between the front and rear axles based on driving conditions, optimizing traction and stability. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The electronic stability control system (DSC) works in conjunction with the ABS to enhance braking performance and prevent skidding.
Market Reception & Comparison
The 840d xDrive Gran Coupe was generally well-received by automotive critics. It was praised for its refined driving experience, luxurious interior, and impressive fuel economy. The diesel engine’s torque was a particular highlight, making it an excellent choice for long-distance cruising. Compared to the 840i, the 840d offered superior fuel efficiency and a more relaxed driving character. However, some critics noted that the diesel engine lacked the responsiveness and sound of the gasoline engine. In terms of reliability, the B57 engine has proven to be a durable and dependable unit, though diesel particulate filter (DPF) maintenance is a consideration for owners.
Legacy
The BMW 840d xDrive Gran Coupe (G16) represents a significant offering in the luxury grand touring segment. Its combination of performance, efficiency, and practicality has made it a popular choice among discerning buyers. On the used car market, these models hold their value relatively well, particularly those with low mileage and a comprehensive service history. The B57 engine’s reputation for reliability ensures that well-maintained 840d models continue to provide years of enjoyable driving. The G16 8 Series, including the 840d, helped to re-establish BMW’s presence in the luxury coupe market, showcasing the brand’s commitment to innovation and driving pleasure.
