Comparison BMW 8 Series Gran Coupe (G16) 840d (320 Hp) xDrive Steptronic & Mercedes-Benz SLK (R171, facelift 2008) SLK 280 V6 (231 Hp)
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| Brand: | BMW | Mercedes-Benz |
| Model: | 8 Series | SLK |
| Generation: | 8 Series Gran Coupe (G16) | SLK (R171, facelift 2008) |
| Engine / modification: | 840d (320 Hp) xDrive Steptronic | SLK 280 V6 (231 Hp) |
| Production start: | 2019 year | 2008 year |
| Production end: | 2020 year | 2009 year |
| Coupe type: | Coupe | Roadster |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 2 |
| Fuel consumption / economy - urban: | 7.3-7.4 l/100 km | |
| Fuel consumption / economy - extra urban: | 5.1-5.7 l/100 km | |
| Fuel consumption / economy - combined: | 5.9-6.3 l/100 km | |
| Fuel Type: | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.29 | 0.32 |
| Fuel tank volume: | 68 l | 70 l |
| Emission standard: | Euro 6d-Temp | Euro 4 |
| CO2 emissions: | 155-166 g/km | |
| Power: | 320 hp | 231 hp |
| Max power in: | 4400 rpm. | 6000 rpm. |
| Maximum speed: | 250 km/h | 250 , Electronically limited km/h |
| Acceleration from 0 to 100 km/h: | 5.1 sec | 6.3 sec |
| Torque: | 680 Nm @ 1750-2250 rpm. | 300 Nm @ 2500-5000 rpm. |
| Model Engine: | B57D30 | M 272.942 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2993 cm3 | 2996 cm3 |
| Engine oil capacity: | 6.5 l | 8 l |
| Coolant: | 9.5 l | 7.1 l |
| Fuel System: | Diesel Commonrail | |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 16.5 | 11.3 |
| Piston Stroke: | 90 mm | 82.1 mm |
| Cylinder Bore: | 84 mm | 88 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 5082 mm | 4107 mm |
| Width: | 1932 mm | 1788 mm |
| Width including mirrors: | 2137 mm | 2005 mm |
| Height: | 1407 mm | 1296 mm |
| Wheelbase: | 3023 mm | 2430 mm |
| Front track: | 1627 mm | |
| Rear (Back) track: | 1671 mm | |
| Front overhang: | 953 mm | |
| Rear overhang: | 1106 mm | |
| Minimum volume of Luggage (trunk): | 208 l | |
| Maximum amount of Luggage (trunk): | 440 l | |
| Front suspension: | Double wishbone | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 2560 kg | 1770 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc |
| Kerb Weight: | 1925 kg | 1380 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering |
| Max. roof load: | 75 kg | 50 kg |
| Minimum turning circle (turning diameter): | 10.51 m | |
| Tire size: | 245/45 R18 100Y XL; 275/40 R18 103Y XL | Front wheel tires: 205/55 R 16 |
| Wheel rims size: | 8J x 18; 9J x 18 | Front wheel rims: 7 J x 16 |