The BMW 8 Series Gran Coupe (G16) 840i Steptronic, produced from 2020 to March 2022, represents a compelling blend of luxury, performance, and technology within the 8 Series lineup. Positioned as a mid-range offering, it slotted between the base 840i and the high-performance M8 models. Built on the G16 platform, the 840i Gran Coupe aimed to deliver a refined grand touring experience with a focus on comfortable long-distance driving. This four-door coupe sought to appeal to buyers desiring a more practical alternative to traditional two-door grand tourers, without sacrificing the BMW brand’s signature driving dynamics.
Technical Specifications
| Brand | BMW |
| Model | 8 Series |
| Generation | 8 Series Gran Coupe (G16) |
| Type (Engine) | 840i (333 Hp) Steptronic |
| Start of production | 2020 |
| End of production | March, 2022 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban | 9.4-9.7 l/100 km (25 – 24.2 US mpg, 30.1 – 29.1 UK mpg, 10.6 – 10.3 km/l) |
| Fuel consumption (economy) – extra urban | 5.9-6.1 l/100 km (39.9 – 38.6 US mpg, 47.9 – 46.3 UK mpg, 16.9 – 16.4 km/l) |
| Fuel consumption (economy) – combined | 7.2-7.4 l/100 km (32.7 – 31.8 US mpg, 39.2 – 38.2 UK mpg, 13.9 – 13.5 km/l) |
| CO2 emissions | 166-171 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.4 sec |
| Acceleration 0 – 62 mph | 5.4 sec |
| Acceleration 0 – 60 mph | 5.1 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 5.5 kg/Hp, 183.5 Hp/tonne |
| Weight-to-torque ratio | 3.6 kg/Nm, 275.5 Nm/tonne |
| Power | 333 Hp @ 5500-6250 rpm |
| Power per litre | 111.1 Hp/l |
| Torque | 500 Nm @ 1700-4000 rpm (368.78 lb.-ft. @ 1700-4000 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 | 1815 kg (4001.39 lbs.) |
| Max. weight | 2435 kg (5368.26 lbs.) |
| Max load | 620 kg (1366.87 lbs.) |
| Trunk (boot) space – minimum | 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 | 5074 mm (199.76 in.) |
| Width | 1932 mm (76.06 in.) |
| Height | 1401 mm (55.16 in.) |
| Wheelbase | 3023 mm (119.02 in.) |
| Front track | 1627 mm (64.06 in.) |
| Rear (Back) track | 1671 mm (65.79 in.) |
| Ride height (ground clearance) | 121 mm (4.76 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle | 12.3 m (40.35 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| 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 (Front) | 245/45 R18 100Y |
| Tires size (Rear) | 275/40 R18 103Y |
| Wheel rims size (Front) | 8J x 18 |
| Wheel rims size (Rear) | 9J x 18 |
INTRODUCTION
The BMW 840i Gran Coupe, launched in 2020, is a four-door coupe that blends the luxurious appointments of the 8 Series with the practicality of a sedan. It’s part of the G16 generation, which marked BMW’s return to the 8 Series nameplate after a hiatus of over two decades. The 840i Steptronic variant, powered by the B58 engine and paired with an eight-speed automatic transmission, was designed to offer a balance between performance and efficiency, appealing to buyers who wanted a sophisticated grand tourer without the outright aggression of the M8.
Powertrain & Engine Architecture
At the heart of the 840i Gran Coupe lies the B58B30C 3.0-liter inline-six engine. This engine is a cornerstone of BMW’s modern powertrain strategy, 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 333 horsepower at 5500-6250 rpm and 500 Nm (368.78 lb.-ft.) of torque between 1700 and 4000 rpm.
The engine is mated to BMW’s eight-speed Steptronic automatic transmission. This transmission is renowned for its quick and smooth shifts, contributing to the overall refined driving experience. The Steptronic transmission offers both automatic and manual shift modes, allowing drivers to tailor the driving experience to their preferences. The transmission’s gear ratios are optimized for both acceleration and fuel efficiency, providing a balance between performance and economy.
Driving Characteristics
The 840i Gran Coupe delivers a refined and comfortable driving experience. The combination of the smooth inline-six engine and the eight-speed automatic transmission results in effortless acceleration and seamless gear changes. While not as overtly sporty as the M8, the 840i still offers ample performance for both highway cruising and spirited driving. The rear-wheel-drive configuration contributes to a balanced chassis, providing predictable handling and a connected feel to the road. The suspension is tuned for comfort, absorbing bumps and imperfections in the road surface while maintaining good body control. Compared to a manual transmission equipped 840i (though less common), the Steptronic offers convenience and ease of use, particularly in urban environments. However, some enthusiasts may find the manual transmission provides a more engaging driving experience.
Equipment & Trim Levels
The 840i Gran Coupe came standard with a comprehensive list of features, including leather upholstery, power-adjustable seats with memory function, a premium sound system, and a large infotainment display with iDrive controller. Standard safety features included 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. The interior design emphasized luxury and sophistication, with high-quality materials and meticulous attention to detail.
Chassis & Braking
The 840i Gran Coupe features a double-wishbone front suspension and an independent multi-link rear suspension. This suspension setup provides a comfortable ride and precise handling. The car 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) and electronic brake-force distribution. The steering is electric power-assisted, offering precise and responsive steering feel.
Market Reception & Comparison
The 840i Gran Coupe was generally well-received by automotive critics. It was praised for its luxurious interior, smooth ride, and powerful engine. However, some critics noted that the car’s size and weight could make it feel less agile than some of its competitors. Compared to the 840i Coupe, the Gran Coupe offered increased practicality thanks to its four doors and larger rear seat. Compared to the M8, the 840i provided a more comfortable and refined driving experience, sacrificing some of the M8’s outright performance. Fuel economy figures of 7.2-7.4 l/100 km (32.7 – 31.8 US mpg) were considered respectable for a vehicle of its size and performance.
Legacy
The BMW 840i Gran Coupe (G16) represents a modern interpretation of the classic grand touring formula. The B58 engine has proven to be a reliable and durable powerplant, and the eight-speed Steptronic transmission is known for its smooth operation. On the used car market, the 840i Gran Coupe holds its value well, attracting buyers who appreciate its blend of luxury, performance, and technology. While maintenance costs can be higher than those of more mainstream vehicles, the 840i’s build quality and engineering generally ensure long-term reliability, making it a desirable choice for discerning drivers.
