Comparison BMW 4 Series Coupe (F32) 420i (184 Hp) xDrive Steptronic & Mercedes-Benz SL (R231) SL 350 (306 Hp) G-TRONIC
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| Brand: | BMW | Mercedes-Benz |
| Model: | 4 Series | SL |
| Generation: | 4 Series Coupe (F32) | SL (R231) |
| Engine / modification: | 420i (184 Hp) xDrive Steptronic | SL 350 (306 Hp) G-TRONIC |
| Production start: | 2016 year | 2012 year |
| Production end: | 2016 year | 2015 year |
| Coupe type: | Coupe | Roadster |
| Num. of Doors: | 2 | 2 |
| Num. of seats: | 4 | 2 |
| Fuel consumption / economy - urban: | 7.7-8.1 l/100 km | 9.9-9.3 l/100 km |
| Fuel consumption / economy - extra urban: | 4.8-5.1 l/100 km | 6.1-5.4 l/100 km |
| Fuel consumption / economy - combined: | 5.9-6.2 l/100 km | 7.5-6.8 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | |
| Fuel tank volume: | 60 l | 65 l |
| Emission standard: | EURO VI | Euro 5 |
| CO2 emissions: | 137-144 g/km | 176-159 g/km |
| Power: | 184 hp | 306 hp |
| Max power in: | 5000 rpm. | 6500 rpm. |
| Maximum speed: | 231 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 7.8 sec | 5.9 sec |
| Torque: | 270 Nm @ 1350-4600 rpm. | 370 Nm @ 3500-5250 rpm. |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1998 cm3 | 3498 cm3 |
| Engine oil capacity: | 5.25 l | |
| Fuel System: | Direct injection | Direct injection |
| Aspiration / Turbine: | Twin-power turbo | BiTurbo |
| Position of cylinders: | Inline | V engine |
| Number of cylinders: | 4 | 6 |
| Number of valves per cylinder: | 4 | |
| Compression ratio: | 11 | 12 |
| 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 | 7G-TRONIC PLUS |
| Length: | 4638 mm | 4617 mm |
| Width: | 1825 mm | 1877 mm |
| Height: | 1392 mm | 1315 mm |
| Wheelbase: | 2810 mm | 2585 mm |
| Front track: | 1544 mm | 1600 mm |
| Rear (Back) track: | 1590 mm | 1604 mm |
| Ride height(clearance): | 145 mm | |
| Minimum volume of Luggage (trunk): | 445 l | 241 l |
| Maximum amount of Luggage (trunk): | 381 l | |
| Front suspension: | Independent, spring | Independent multi-link |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 2090 kg | 2065 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1570 kg | 1685 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering |
| Max. roof load: | 75 kg | |
| Minimum turning circle (turning diameter): | 11.8 m | 11.04 m |
| Permitted trailer load with brakes (12%): | 1700 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 75 kg | |
| Tire size: | 225/50 R17 94W; 225/45 R18; 255/40 R18; 225/40 R19; 255/35 R19 | 255/45 R17 |
| Wheel rims size: | 7.5J x 17; 8J x 18; 8.5J x 18; 8J x 19; 8.5J x 19 | R17 |