The BMW M8 Convertible (F91), particularly the facelifted 2022 Competition model equipped with the 4.4-liter V8 engine producing 625 horsepower and paired with the xDrive all-wheel-drive system and Steptronic Sport automatic transmission, represents the pinnacle of open-top performance within the 8 Series lineup. Introduced in March 2022, this variant builds upon the already potent M8 Convertible, offering enhanced performance and refined luxury. It sits at the top of the convertible range, exceeding the capabilities of the standard 8 Series and other M8 configurations.
Technical Specifications
| Brand | BMW |
| Model | M8 |
| Generation | M8 Convertible (F91, facelift 2022) |
| Type | Competition 4.4 V8 (625 Hp) xDrive Steptronic Sport |
| Start of production | March, 2022 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Combined fuel consumption (WLTP) | 11.2-11.6 l/100 km (21 – 20.3 US mpg, 25.2 – 24.4 UK mpg, 8.9 – 8.6 km/l) |
| CO2 emissions (WLTP) | 255-264 g/km |
| Fuel consumption (urban) | 16.8-16.9 l/100 km (14 – 13.9 US mpg, 16.8 – 16.7 UK mpg, 6 – 5.9 km/l) |
| Fuel consumption (extra urban) | 7.9-8.2 l/100 km (29.8 – 28.7 US mpg, 35.8 – 34.4 UK mpg, 12.7 – 12.2 km/l) |
| Fuel consumption (combined) | 11.2-11.4 l/100 km (21 – 20.6 US mpg, 25.2 – 24.8 UK mpg, 8.9 – 8.8 km/l) |
| CO2 emissions (NEDC) | 257-262 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 3.3 sec |
| Acceleration 0 – 62 mph | 3.3 sec |
| Acceleration 0 – 60 mph | 3.1 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 3.2 kg/Hp, 308.6 Hp/tonne |
| Weight-to-torque ratio | 2.7 kg/Nm, 370.4 Nm/tonne |
| Power | 625 Hp @ 6000 rpm |
| Power per litre | 142.2 Hp/l |
| Torque | 750 Nm @ 1800-5860 rpm (553.17 lb.-ft. @ 1800-5860 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | S63B44B |
| Engine displacement | 4395 cm3 (268.2 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 89 mm (3.5 in.) |
| Piston Stroke | 88.3 mm (3.48 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Engine oil capacity | 10 l (10.57 US qt | 8.8 UK qt) |
| Kerb Weight | 2025 kg (4464.36 lbs.) |
| Max. weight | 2440 kg (5379.28 lbs.) |
| Max load | 415 kg (914.92 lbs.) |
| Trunk (boot) space (minimum) | 280-350 l (9.89 – 12.36 cu. ft.) |
| Fuel tank capacity | 68 l (17.96 US gal | 14.96 UK gal) |
| Length | 4867 mm (191.61 in.) |
| Width | 1907 mm (75.08 in.) |
| Width including mirrors | 2137 mm (84.13 in.) |
| Height | 1353 mm (53.27 in.) |
| Wheelbase | 2827 mm (111.3 in.) |
| Front track | 1627 mm (64.06 in.) |
| Rear track | 1632 mm (64.25 in.) |
| Front overhang | 950 mm (37.4 in.) |
| Rear overhang | 1090 mm (42.91 in.) |
| Minimum turning circle | 12.2 m (40.03 ft.) |
| Drivetrain Architecture | All wheel drive (4×4). ICE drives all four wheels. |
| Number of gears | 8 |
| Gearbox type | Automatic transmission Steptronic Sport |
| 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 | 275/35 ZR20; 285/35 ZR20 |
| Wheel rims size | 9.5J x 20; 10.5J x 20 |
INTRODUCTION
The F91 M8 Convertible, and specifically the 2022 Competition variant, represents the second generation of BMW’s high-performance 8 Series convertible. Built on the GKL platform (shared with the 8 Series Coupe and Gran Coupe), the M8 Convertible aims to deliver a thrilling driving experience combined with open-air luxury. The facelift introduced in 2022 brought subtle styling updates, enhanced technology, and refinements to the already potent powertrain. This model occupies the top tier of BMW’s convertible offerings, competing with rivals like the Porsche 911 Cabriolet and Aston Martin DB11 Volante.
Powertrain & Engine Architecture
At the heart of the M8 Competition Convertible lies the S63B44B engine, a 4.4-liter twin-turbocharged V8. This engine utilizes direct injection and variable valve timing (Valvetronic) to optimize performance and efficiency. The twin-scroll turbochargers are positioned within the V of the engine, minimizing turbo lag and maximizing responsiveness. The engine produces 625 horsepower at 6000 rpm and a substantial 750 Nm (553 lb-ft) of torque available from 1800 to 5860 rpm. The engine’s architecture is longitudinally mounted at the front of the vehicle. The Steptronic Sport 8-speed automatic transmission is specifically tuned for the M8, offering quicker shift times and more aggressive programming than the standard 8 Series transmission. It features Drivelogic, allowing the driver to select from different shift profiles to tailor the transmission’s behavior to their driving style.
Driving Characteristics
The M8 Competition Convertible delivers exhilarating performance. The combination of the powerful V8 engine, all-wheel drive, and the quick-shifting automatic transmission results in a 0-60 mph time of just 3.1 seconds (calculated) and a 0-100 km/h time of 3.3 seconds. The xDrive system intelligently distributes power between the front and rear axles, providing optimal traction and stability. While the automatic transmission doesn’t offer the same level of driver engagement as a manual, the Steptronic Sport transmission’s responsiveness and customizable shift profiles provide a satisfying driving experience. Compared to lower-powered 8 Series convertibles, the M8 Competition offers a significantly more visceral and engaging driving experience, with a more aggressive throttle response and a more pronounced exhaust note.
Equipment & Trim Levels
The M8 Competition Convertible comes standard with a comprehensive list of luxury and performance features. Standard equipment includes Merino leather upholstery, M Sport seats, a Bowers & Wilkins Diamond Surround Sound System, a head-up display, and BMW’s Live Cockpit Professional with a 12.3-inch digital instrument cluster and a 10.25-inch central information display. Optional extras include carbon fiber trim, extended leather upholstery, and various driver-assistance systems. The interior design emphasizes a driver-focused layout with premium materials and meticulous craftsmanship.
Chassis & Braking
The M8 Convertible features a robust chassis designed to handle the engine’s immense power. The suspension consists of a double-wishbone front suspension and an independent multi-link rear suspension, both specifically tuned for the M8. Adaptive dampers are standard, allowing the driver to adjust the suspension’s firmness to suit their preferences. The braking system consists of ventilated discs at all four corners, with large calipers providing exceptional stopping power. The car also incorporates advanced stability control systems to enhance safety and handling.
Market Reception & Comparison
The 2022 BMW M8 Competition Convertible was generally well-received by automotive critics. Praise was directed towards its exceptional performance, luxurious interior, and advanced technology. However, some critics noted the car’s high price tag and substantial weight. Compared to other trims in the 8 Series lineup, the M8 Competition offers a significantly more focused and engaging driving experience, but at the expense of some comfort and fuel economy. Its fuel consumption, rated at 11.2-11.6 l/100 km, is considerably higher than that of the standard 8 Series models.
Legacy
The S63B44B engine has proven to be a robust and reliable powerplant when properly maintained. While the M8 Convertible is a relatively new model, early indications suggest that the powertrain is durable and capable of providing years of enjoyable performance. As a high-performance luxury convertible, the M8 Competition is likely to hold its value well in the used car market, appealing to enthusiasts seeking a thrilling and exclusive driving experience. The combination of performance, luxury, and open-air enjoyment ensures its place as a desirable and collectible vehicle.
