Comparison BMW 8 Series Gran Coupe (G16) 840i (340 Hp) xDrive Steptronic & Mercedes-Benz C-class Cabriolet (A205, facelift 2018) C 300d (245 Hp) G-TRONIC
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| Brand: | BMW | Mercedes-Benz |
| Model: | 8 Series | C-class |
| Generation: | 8 Series Gran Coupe (G16) | C-class Cabriolet (A205, facelift 2018) |
| Engine / modification: | 840i (340 Hp) xDrive Steptronic | C 300d (245 Hp) G-TRONIC |
| Production start: | 2019 year | 2018 year |
| Production end: | 2020 year | 2021 year |
| Coupe type: | Coupe | Cabriolet |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 4 |
| Fuel consumption / economy - urban: | 9.5-9.8 l/100 km | 6.1-6.7 l/100 km |
| Fuel consumption / economy - extra urban: | 6.3-6.7 l/100 km | 4.7-5.2 l/100 km |
| Fuel consumption / economy - combined: | 7.5-7.8 l/100 km | 5.2-5.7 l/100 km |
| Fuel consumption at Low speed (WLTP): | 5.7 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.29 | |
| Fuel tank volume: | 68 l | 50 l |
| Fuel consumption at very high speed (WLTP): | 6.6 l/100 km | |
| Emission standard: | Euro 6d-Temp | Euro 6 |
| CO2 emissions: | 171-179 g/km | 138 - 151 g/km |
| Power: | 340 hp | 245 hp |
| Max power in: | 5000-6500 rpm. | |
| Maximum speed: | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 4.9 sec | 6.3 sec |
| CO2 emissions (WLTP): | 149-172 g/km | |
| Torque: | 500 Nm @ 1600-4500 rpm. | 500 Nm @ 1600-2400 rpm. |
| Model Engine: | B58B30 | OM 654.920 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2998 cm3 | 1950 cm3 |
| Engine oil capacity: | 6.5 l | 6.0 l |
| Coolant: | 10.0 l | |
| Fuel System: | Direct injection | Diesel Commonrail |
| Aspiration / Turbine: | Twin-power turbo | Turbocharger |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | VALVETRONIC | |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 11 | |
| Piston Stroke: | 94.6 mm | |
| Cylinder Bore: | 82 mm | |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | 9 G-TRONIC |
| Length: | 5082 mm | 4686 mm |
| Width: | 1932 mm | 1810 mm |
| Width including mirrors: | 2137 mm | |
| Height: | 1407 mm | 1409 mm |
| Wheelbase: | 3023 mm | 2840 mm |
| Front track: | 1627 mm | 1567 mm |
| Rear (Back) track: | 1671 mm | |
| Ride height(clearance): | 88 mm | |
| Approach angle: | 13.2 ° | |
| Departure angle: | 12.6 ° | |
| Front overhang: | 953 mm | 790 mm |
| Rear overhang: | 1106 mm | 1056 mm |
| Maximum amount of Luggage (trunk): | 440 l | |
| Front suspension: | Double wishbone | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 2480 kg | 2285 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1855 kg | 1745 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering |
| Max. roof load: | 75 kg | |
| Permitted trailer load with brakes (12%): | 1800 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Tire size: | 245/45 R18 100Y XL; 275/40 R18 103Y XL | |
| Wheel rims size: | 8J x 18; 9J x 18 |