The BMW 8 Series Gran Coupe (G16) 840i xDrive Steptronic represents BMW’s foray into the luxury four-door coupe segment, launched in June 2019 and continuing through 2020. Positioned as a mid-range offering within the G16 8 Series lineup, it slots between the base 840i and the high-performance M850i. The 840i aimed to deliver a blend of grand touring comfort, sophisticated technology, and engaging performance, appealing to buyers seeking a luxurious and dynamic driving experience. It is built on the same platform as the 8 Series Coupe and Convertible, sharing many components but distinguished by its extended wheelbase and four-door configuration.
Technical Specifications
| Brand | BMW |
| Model | 8 Series |
| Generation | 8 Series Gran Coupe (G16) |
| Type | 840i (340 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 (urban) | 9.5-9.8 l/100 km (24.8 – 24 US mpg, 29.7 – 28.8 UK mpg, 10.5 – 10.2 km/l) |
| Fuel consumption (extra urban) | 6.3-6.7 l/100 km (37.3 – 35.1 US mpg, 44.8 – 42.2 UK mpg, 15.9 – 14.9 km/l) |
| Fuel consumption (combined) | 7.5-7.8 l/100 km (31.4 – 30.2 US mpg, 37.7 – 36.2 UK mpg, 13.3 – 12.8 km/l) |
| CO2 emissions | 171-179 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.9 sec |
| Acceleration 0 – 62 mph | 4.9 sec |
| Acceleration 0 – 60 mph | 4.7 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d-Temp |
| Weight-to-power ratio | 5.5 kg/Hp, 183.3 Hp/tonne |
| Weight-to-torque ratio | 3.7 kg/Nm, 269.5 Nm/tonne |
| Power | 340 Hp @ 5000-6500 rpm |
| Power per litre | 113.4 Hp/l |
| Torque | 500 Nm @ 1600-4500 rpm (368.78 lb.-ft. @ 1600-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B58B30C |
| Engine displacement | 2998 cm3 (182.95 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Valvetrain | VALVETRONIC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1855 kg (4089.57 lbs.) |
| Max. weight | 2480 kg (5467.46 lbs.) |
| Max load | 625 kg (1377.89 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 |
INTRODUCTION
The BMW 840i xDrive Gran Coupe, introduced in 2019, is a four-door coupe that blends luxury, performance, and technology. It’s part of the G16 generation of the 8 Series, which marked BMW’s return to the large coupe market after a hiatus. The 840i xDrive specifically utilizes BMW’s xDrive all-wheel-drive system and an eight-speed Steptronic automatic transmission, paired with the potent B58 inline-six engine. This combination aimed to provide a comfortable yet engaging driving experience, making it a compelling option in the high-end luxury segment.
Powertrain & Engine Architecture
At the heart of the 840i xDrive lies BMW’s B58B30C 3.0-liter inline-six engine. This engine is a member of BMW’s modular engine family, known for its smooth power delivery and efficiency. The B58 utilizes direct fuel injection, a twin-scroll turbocharger, and BMW’s VALVETRONIC variable valve timing and lift system. VALVETRONIC allows for precise control of valve timing and lift, optimizing engine performance and fuel economy across a wide range of driving conditions. The engine produces 340 horsepower at 5000-6500 rpm and 500 Nm (368.78 lb-ft) of torque between 1600-4500 rpm. The eight-speed Steptronic automatic transmission is a torque-converter type, offering smooth and quick shifts. It features a wide gear ratio spread, contributing to both fuel efficiency and responsive acceleration. The xDrive all-wheel-drive system is primarily rear-biased, sending power to all four wheels as needed to maximize traction and stability.
Driving Characteristics
The 840i xDrive Gran Coupe delivers a refined and capable driving experience. The combination of the turbocharged inline-six and the eight-speed automatic results in strong acceleration, with a 0-60 mph time of around 4.7 seconds. The xDrive system provides excellent grip in various conditions, enhancing stability and confidence. While not as overtly sporty as the M850i, the 840i offers a comfortable ride quality and precise steering. The automatic transmission is well-tuned, providing seamless gear changes in both automatic and manual modes. The gear ratios are optimized for both highway cruising and spirited driving, offering a balance between fuel efficiency and performance. Compared to a manual transmission equipped 8 Series, the Steptronic automatic prioritizes ease of use and convenience, making it ideal for daily driving and long-distance journeys.
Equipment & Trim Levels
The 840i xDrive Gran Coupe came standard with a comprehensive list of features, reflecting its luxury positioning. Standard equipment included leather upholstery, power-adjustable front seats with memory function, a panoramic sunroof, a premium sound system, and a 12.3-inch digital instrument cluster. BMW’s iDrive infotainment system with a 10.25-inch touchscreen display was also standard, offering navigation, connectivity, and a range of vehicle settings. Optional extras included upgraded leather options, massaging seats, a Bowers & Wilkins Diamond Surround Sound System, and various driver-assistance features such as adaptive cruise control, lane keeping assist, and parking assist. Exterior options included a variety of wheel designs, paint colors, and trim finishes.
Chassis & Braking
The 8 Series Gran Coupe features a sophisticated chassis designed to deliver a balance of comfort and handling. The front suspension utilizes a double-wishbone design, while the rear suspension employs an independent multi-link setup. This configuration provides excellent wheel control and ride quality. The 840i xDrive is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The braking system is enhanced by ABS (Anti-lock Braking System), electronic brake-force distribution, and brake assist. The steering system is an electric power-assisted rack-and-pinion setup, offering precise and responsive steering feel.
Market Reception & Comparison
The BMW 840i xDrive Gran Coupe was generally well-received by automotive critics. It was praised for its luxurious interior, refined driving experience, and powerful engine. However, some critics noted that the car’s size and weight could make it feel less agile than smaller coupes. Compared to the higher-performance M850i, the 840i offered a more comfortable ride and better fuel economy, making it a more practical choice for everyday driving. Compared to competitors such as the Mercedes-Benz S-Class Coupe and the Audi A8, the 840i offered a more driver-focused experience and a more stylish design. Fuel economy figures were respectable for a vehicle of its size and performance, averaging around 31.4 – 30.2 US mpg in combined driving.
Legacy
The B58 engine powering the 840i xDrive has proven to be a reliable and durable powerplant. While some early B58 engines experienced issues with oil consumption, these were largely addressed with updated engine management software. The eight-speed Steptronic automatic transmission is also known for its reliability. On the used car market, the 840i xDrive Gran Coupe represents a compelling value proposition, offering a luxurious and well-equipped grand tourer at a more accessible price point than when new. Its combination of performance, comfort, and technology continues to appeal to buyers seeking a sophisticated and engaging driving experience.
