Comparison BMW 4 Series Coupe (F32) 420i (184 Hp) xDrive Steptronic & BMW 6 Series Gran Turismo (G32) 630i (258 Hp) Steptronic
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| Brand: | BMW | BMW |
| Model: | 4 Series | 6 Series |
| Generation: | 4 Series Coupe (F32) | 6 Series Gran Turismo (G32) |
| Engine / modification: | 420i (184 Hp) xDrive Steptronic | 630i (258 Hp) Steptronic |
| Production start: | 2016 year | 2017 year |
| Production end: | 2016 year | 2020 year |
| Coupe type: | Coupe | |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 4 | 5 |
| Fuel consumption / economy - urban: | 7.7-8.1 l/100 km | 7.8-8.2 l/100 km |
| Fuel consumption / economy - extra urban: | 4.8-5.1 l/100 km | 5.3-5.8 l/100 km |
| Fuel consumption / economy - combined: | 5.9-6.2 l/100 km | 6.2-6.6 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | 0.26 |
| Fuel tank volume: | 60 l | 68 l |
| Emission standard: | EURO VI | Euro 6 |
| CO2 emissions: | 137-144 g/km | 142-152 g/km |
| Power: | 184 hp | 258 hp |
| Max power in: | 5000 rpm. | 5000-6500 rpm. |
| Maximum speed: | 231 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 7.8 sec | 6.3 sec |
| Torque: | 270 Nm @ 1350-4600 rpm. | 400 Nm @ 1550-4400 rpm. |
| Model Engine: | B48B20 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1998 cm3 | 1998 cm3 |
| Engine oil capacity: | 5.25 l | 5.25 l |
| Fuel System: | Direct injection | Direct injection |
| Aspiration / Turbine: | Twin-power turbo | Twin-power turbo |
| Position of cylinders: | Inline | Inline |
| Number of cylinders: | 4 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 11 | 10.2 |
| Piston Stroke: | 94.6 mm | 94.6 mm |
| Cylinder Bore: | 82 mm | 82 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | 8 Steptronic |
| Length: | 4638 mm | 5091 mm |
| Width: | 1825 mm | 1902 mm |
| Width including mirrors: | 2158 mm | |
| Height: | 1392 mm | 1538 mm |
| Wheelbase: | 2810 mm | 3070 mm |
| Front track: | 1544 mm | 1615 mm |
| Rear (Back) track: | 1590 mm | 1649 mm |
| Ride height(clearance): | 145 mm | 138 mm |
| Front overhang: | 871 mm | |
| Rear overhang: | 1150 mm | |
| Minimum volume of Luggage (trunk): | 445 l | 610 l |
| Maximum amount of Luggage (trunk): | 1800 l | |
| Front suspension: | Independent, spring | Double wishbone |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 2090 kg | 2380 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1570 kg | 1720 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 | 75 kg |
| Minimum turning circle (turning diameter): | 11.8 m | 12.3 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 | 100 kg |
| Tire size: | 225/50 R17 94W; 225/45 R18; 255/40 R18; 225/40 R19; 255/35 R19 | 225/60 R17; 245/50 R18; 245/45 R19; 275/40 R19; 245/40 R20; 275/35 R20 |
| Wheel rims size: | 7.5J x 17; 8J x 18; 8.5J x 18; 8J x 19; 8.5J x 19 | 7.5J x 17; 8J x 18; 8.5J x 19; 9.5J x 19; 8.5J x 20; 10J x 20 |