Comparison BMW M5 (F90 LCI, facelift 2020) CS 4.4 V8 (635 Hp) xDrive Steptronic & BMW 8 Series Convertible (G14) 840d (340 Hp) MHEV xDrive Steptronic
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| Brand: | BMW | BMW |
| Model: | M5 | 8 Series |
| Generation: | M5 (F90 LCI, facelift 2020) | 8 Series Convertible (G14) |
| Engine / modification: | CS 4.4 V8 (635 Hp) xDrive Steptronic | 840d (340 Hp) MHEV xDrive Steptronic |
| Production start: | 2021 year | 2020 year |
| Coupe type: | Sedan | Cabriolet |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 4 | 4 |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.30 | |
| Fuel tank volume: | 68 l | 66 l |
| Combined fuel consumption (WLTP): | 10.9-11.3 l/100 km | |
| Emission standard: | Euro 6d | Euro 6d |
| Power: | 635 hp | 340 hp |
| Max power in: | 6000 rpm. | 4400 rpm. |
| Maximum speed: | 305 , Electronically limited km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 3.0 sec | 5.1 sec |
| Acceleration from 0 to 200 km/h: | 10.3 sec | |
| CO2 emissions (WLTP): | 248-257 g/km | |
| Torque: | 750 Nm @ 1800-5950 rpm. | 700 Nm @ 1750-2250 rpm. |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4395 cm3 | 2993 cm3 |
| Engine oil capacity: | 10.0 l | 7.0 l |
| Fuel System: | Direct injection | Diesel Commonrail |
| Position of cylinders: | Inline | |
| Valvetrain: | VALVETRONIC | |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10 | 16.5 |
| Piston Stroke: | 88.3 mm | 90 mm |
| Cylinder Bore: | 89 mm | 84 mm |
| Electric motor power: | 11 | |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 8 Steptronic | 8 Steptronic |
| Length: | 5001 mm | 4843 mm |
| Width: | 1903 mm | 1902 mm |
| Height: | 1468 mm | 1339 mm |
| Wheelbase: | 2982 mm | 2822 mm |
| Front track: | 1625 mm | 1627 mm |
| Rear (Back) track: | 1594 mm | 1642 mm |
| Ride height(clearance): | 119 mm | 118 mm |
| Minimum volume of Luggage (trunk): | 530 l | 350 l |
| Front suspension: | Double wishbone | Double wishbone |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 2290 kg | 2500 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1825 kg | 2030 kg |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering |
| Max. roof load: | 100 kg | |
| Minimum turning circle (turning diameter): | 12.6 m | 11.9 m |
| Permitted towbar download: | 90 kg | |
| Tire size: | Front wheel tires: 275/35 ZR20 102Y XL | Front wheel tires: 245/45 R18 100Y XL |
| Wheel rims size: | Front wheel rims: 9.5J x 20 | Front wheel rims: 8J x 18 |