Comparison BMW 6 Series Convertible (F12 LCI, facelift 2015) 640i (320 Hp) xDrive Steptronic & Mercedes-Benz Fintail (W111) 230 S (120 Hp)
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| Brand: | BMW | Mercedes-Benz |
| Model: | 6 Series | Fintail |
| Generation: | 6 Series Convertible (F12 LCI, facelift 2015) | Fintail (W111) |
| Engine / modification: | 640i (320 Hp) xDrive Steptronic | 230 S (120 Hp) |
| Production start: | 2015 year | 1965 year |
| Production end: | 2018 year | 1968 year |
| Coupe type: | Cabriolet | Sedan |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 4 | 5 |
| Fuel consumption / economy - urban: | 11.2-11.7 l/100 km | |
| Fuel consumption / economy - extra urban: | 6.2-6.4 l/100 km | |
| Fuel consumption / economy - combined: | 8.0-8.4 l/100 km | 11.2 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | |
| Fuel tank volume: | 70 l | 65 l |
| Emission standard: | Euro 6 | |
| CO2 emissions: | 187-195 g/km | |
| Power: | 320 hp | 120 hp |
| Max power in: | 5800-6000 rpm. | 5400 rpm. |
| Maximum speed: | 250 km/h | 175 km/h |
| Acceleration from 0 to 100 km/h: | 5.4 sec | 12.5 sec |
| Torque: | 450 Nm @ 1300-4500 rpm. | 179 Nm @ 4000 rpm. |
| Model Engine: | N55B30 | M 180 VIII / 180.947 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2979 cm3 | 2306 cm3 |
| Engine oil capacity: | 6.5 l | |
| Coolant: | 10.2 l | |
| Fuel System: | Direct injection | Carburettor |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | SOHC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 10.2 | 9 |
| Piston Stroke: | 89.6 mm | 72.8 mm |
| Cylinder Bore: | 84 mm | 82 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | |
| Number of Gears (manual transmission): | 4 | |
| Length: | 4894 mm | 4875 mm |
| Width: | 1894 mm | 1795 mm |
| Height: | 1365 mm | 1500 mm |
| Wheelbase: | 2855 mm | 2750 mm |
| Front track: | 1600 mm | 1482 mm |
| Rear (Back) track: | 1665 mm | 1485 mm |
| Ride height(clearance): | 123 mm | |
| Minimum volume of Luggage (trunk): | 300 l | |
| Maximum amount of Luggage (trunk): | 350 l | |
| Front suspension: | Double wishbone | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 2390 kg | 1850 kg |
| Front brakes: | Disc | Disc |
| Rear brakes: | Disc | Drum |
| Kerb Weight: | 1890 kg | 1350 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls |
| Power steering: | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.7 m | |
| Tire size: | 225/55 R17; 245/45 R18; 275/45 R18; 245/40 R19; 275/35 R19; 245/35 R20; 275/30 R20 | |
| Wheel rims size: | 8J x 17; 8J x 18; 9J x 18; 8.5J x 19; 9J x 19; 8.5J x 20; 9J x 20 |