Comparison BMW 4 Series Convertible (F33, facelift 2017) 440i (326 Hp) Steptronic & Mercedes-Benz R-class (W251) R 500 V8 (306 Hp) 4MATIC 7G-TRONIC
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| Brand: | BMW | Mercedes-Benz |
| Model: | 4 Series | R-class |
| Generation: | 4 Series Convertible (F33, facelift 2017) | R-class (W251) |
| Engine / modification: | 440i (326 Hp) Steptronic | R 500 V8 (306 Hp) 4MATIC 7G-TRONIC |
| Production start: | 2017 year | 2005 year |
| Production end: | 2020 year | 2007 year |
| Coupe type: | Cabriolet | Combi |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 4 | 6 |
| Fuel consumption / economy - urban: | 9.1-9.5 l/100 km | |
| Fuel consumption / economy - extra urban: | 5.5-5.8 l/100 km | |
| Fuel consumption / economy - combined: | 6.8-7.2 l/100 km | 13.3 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | |
| Fuel tank volume: | 60 l | 80 l |
| Emission standard: | Euro 6 | Euro 4 |
| CO2 emissions: | 159-167 g/km | 317 g/km |
| Power: | 326 hp | 306 hp |
| Max power in: | 5500 rpm. | 5600 rpm. |
| Maximum speed: | 250 km/h | 245 km/h |
| Acceleration from 0 to 100 km/h: | 5.4 sec | 6.9 sec |
| Torque: | 450 Nm @ 1380-5000 rpm. | 460 Nm @ 2700-4750 rpm. |
| Model Engine: | B58B30 | M 113.971 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2998 cm3 | 4966 cm3 |
| Engine oil capacity: | 6.5 l | 8.5 l |
| Coolant: | 10.1-13 l | |
| Fuel System: | Direct injection | Multi-point injection |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | V engine |
| Valvetrain: | SOHC | |
| Number of cylinders: | 6 | 8 |
| Number of valves per cylinder: | 4 | 3 |
| Compression ratio: | 11 | 10 |
| Piston Stroke: | 94.6 mm | 84 mm |
| Cylinder Bore: | 82 mm | 97 mm |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 8 Steptronic | 7G-TRONIC |
| Length: | 4640 mm | 4922 mm |
| Width: | 1825 mm | 1922 mm |
| Width including mirrors: | 2168 mm | |
| Height: | 1384 mm | 1661 mm |
| Wheelbase: | 2810 mm | 2980 mm |
| Front track: | 1544 mm | 1665 mm |
| Rear (Back) track: | 1593 mm | 1658 mm |
| Ride height(clearance): | 130 mm | |
| Front overhang: | 922 mm | |
| Rear overhang: | 1020 mm | |
| Minimum volume of Luggage (trunk): | 370 l | 550 l |
| Maximum amount of Luggage (trunk): | 1950 l | |
| Front suspension: | Independent, spring | Double wishbone |
| Rear suspension: | Multi-link independent | Independent, spring multi-link with stabilizer |
| Max weight: | 2230 kg | 2865 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1770 kg | 2115 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering |
| Max. roof load: | 100 kg | |
| Minimum turning circle (turning diameter): | 11.3 m | 11.7 m |
| Permitted trailer load with brakes (12%): | 1700 kg | 2100 kg |
| Permitted trailer load without brakes: | 750 kg | 750 kg |
| Permitted towbar download: | 75 kg | |
| Tire size: | 225/50 R17; 225/45 R18; 255/40 R18; 225/40 R19; 255/35 R19 | 255/55 R18; 255/50 R19 |
| Wheel rims size: | 7.5J x 17; 8J x 18; 8.5J x 18; 8J x 19; 8.5J x 19 | 8J x 18; 8J x 19 |