The BMW 840i, part of the G15 LCI (Life Cycle Impulse) facelift introduced in March 2022, represents a refined iteration of BMW’s flagship coupe. Positioned as a mid-range offering within the 8 Series lineup, it slots between the base 840i and the high-performance M8. This variant focuses on delivering a blend of luxury, performance, and grand touring capability, appealing to buyers seeking a sophisticated and powerful coupe experience. The LCI brought subtle styling updates, enhanced technology, and continued refinement of the already potent powertrain. It continues the 8 Series tradition of being a driver-focused luxury grand tourer, a role it inherited from the original 6 Series and the earlier 8 Series produced in the 1990s.
Technical Specifications
| Brand | BMW |
| Model | 8 Series |
| Generation | 8 Series Coupe (G15 LCI, facelift 2022) |
| Type (Engine) | 840i (333 Hp) Steptronic |
| Start of production | March, 2022 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 4 |
| Doors | 2 |
| Combined fuel consumption (WLTP) | 8.2-8.6 l/100 km |
| Combined fuel consumption (US mpg) | 28.7 – 27.4 |
| Combined fuel consumption (UK mpg) | 34.4 – 32.8 |
| Combined fuel consumption (km/l) | 12.2 – 11.6 |
| CO2 emissions (WLTP) | 186-196 g/km |
| Fuel Type | Petrol (Gasoline) |
| 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), Electronically limited |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 5.2 kg/Hp, 192.5 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 289 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 | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1730 kg (3814 lbs.) |
| Max. weight | 2225 kg (4905.29 lbs.) |
| Max load | 495 kg (1091.29 lbs.) |
| Trunk (boot) space – minimum | 420 l (14.83 cu. ft.) |
| Fuel tank capacity | 68 l (17.96 US gal | 14.96 UK gal) |
| Length | 4851 mm (190.98 in.) |
| Width | 1902 mm (74.88 in.) |
| Width including mirrors | 2137 mm (84.13 in.) |
| Height | 1346 mm (52.99 in.) |
| Wheelbase | 2822 mm (111.1 in.) |
| Front track | 1627 mm (64.06 in.) |
| Rear (Back) track | 1642 mm (64.65 in.) |
| Front overhang | 953 mm (37.52 in.) |
| Rear overhang | 1076 mm (42.36 in.) |
| Ride height (ground clearance) | 121 mm (4.76 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle (turning diameter) | 11.6 m (38.06 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) | 245/40 R19; 245/35 R20 |
| Tires size (Rear) | 275/35 R19; 275/30 R20 |
| Wheel rims size (Front) | 8J x 19; 8J x 20 |
| Wheel rims size (Rear) | 9J x 19; 9J x 20 |
Powertrain & Engine Architecture
At the heart of the 840i lies BMW’s 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’ designation indicates the engine family, while ‘B30C’ specifies the 3.0-liter displacement. It utilizes direct fuel injection, operating at a compression ratio of 11:1, and is equipped with a twin-scroll turbocharger and intercooler. This configuration allows for a broad torque curve, peaking at 500 Nm (368.78 lb-ft) between 1700 and 4000 rpm. The engine produces 333 horsepower between 5500 and 6250 rpm. The engine’s valvetrain employs Double Overhead Camshafts (DOHC) and four valves per cylinder, optimizing airflow for enhanced performance. The engine is paired with BMW’s 8-speed Steptronic automatic transmission. This transmission is renowned for its quick and smooth shifts, contributing to both performance and fuel efficiency. It features adaptive shift programs that adjust to the driver’s style and road conditions.
Driving Characteristics
The 840i Steptronic delivers a refined and engaging driving experience. The combination of the potent inline-six and the eight-speed automatic results in a 0-60 mph time of approximately 4.9 seconds. While not as aggressively tuned as the M8, the 840i provides ample power for confident overtaking and spirited driving. The Steptronic transmission is well-matched to the engine’s characteristics, providing seamless gear changes and contributing to a relaxed cruising experience. The gear ratios are optimized for both acceleration and fuel economy. Compared to a manual transmission equipped 840i (not commonly offered in the US market), the Steptronic version prioritizes ease of use and comfort, sacrificing some driver engagement. The 840i offers a more balanced driving experience than higher-performance variants like the M8, which prioritize track performance over everyday usability.
Equipment & Trim Levels
The 840i LCI comes standard with a comprehensive suite of luxury features. Interior appointments typically include leather upholstery, power-adjustable seats with memory function, a premium sound system, and a large infotainment display with iDrive 7 or 8 operating system (depending on production date). Standard safety features include automatic emergency braking, lane departure warning, and adaptive cruise control. Optional extras for the 840i include upgraded leather options, a Bowers & Wilkins Diamond Surround Sound System, active roll stabilization, and various driver-assistance packages. The interior design emphasizes a driver-focused layout with high-quality materials and meticulous craftsmanship.
Chassis & Braking
The 840i utilizes a sophisticated chassis design featuring a double-wishbone front suspension and an independent multi-link rear suspension. This setup provides a comfortable ride while maintaining precise handling characteristics. The car is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock Braking System (ABS) is standard. The suspension is tuned to balance comfort and performance, offering a more compliant ride than the stiffer suspension found in the M8. The electronic power steering provides precise and responsive steering feel.
Market Reception & Comparison
The 840i was generally well-received by automotive critics, praised for its refined driving experience, luxurious interior, and powerful engine. Compared to the 840i with a manual transmission (rarer in the US), the Steptronic version was favored by those prioritizing ease of use and comfort. Fuel economy figures of 8.2-8.6 l/100 km (28.7-27.4 US mpg) are respectable for a vehicle of this size and performance. Reliability has been generally good, although some owners have reported minor issues with the infotainment system. Compared to competitors like the Mercedes-Benz S-Class Coupe and the Porsche 911, the 840i offers a unique blend of luxury, performance, and driving dynamics.
Legacy
The BMW 840i (G15 LCI) represents a modern interpretation of the classic grand touring coupe. The B58 engine has proven to be a robust and reliable powerplant, and the 8-speed Steptronic transmission is known for its durability. On the used car market, the 840i LCI holds its value well, appealing to buyers seeking a luxurious and capable coupe with a proven track record. Its combination of performance, comfort, and technology ensures its continued desirability for years to come.
