Comparison BMW 8 Series Convertible (G14) M850i (530 Hp) xDrive Steptronic & BMW 4 Series Gran Coupe (F36) 430d (258 Hp) xDrive Steptronic
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| Brand: | BMW | BMW |
| Model: | 8 Series | 4 Series |
| Generation: | 8 Series Convertible (G14) | 4 Series Gran Coupe (F36) |
| Engine / modification: | M850i (530 Hp) xDrive Steptronic | 430d (258 Hp) xDrive Steptronic |
| Production start: | 2019 year | 2014 year |
| Production end: | 2020 year | 2016 year |
| Coupe type: | Cabriolet | Coupe |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 4 | 5 |
| Fuel consumption / economy - urban: | 13.3-13.6 l/100 km | 6.2-6.5 l/100 km |
| Fuel consumption / economy - extra urban: | 7.9-8.0 l/100 km | 4.9 l/100 km |
| Fuel consumption / economy - combined: | 9.9-10.0 l/100 km | 5.3-5.5 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.32 | 0.29 |
| Fuel tank volume: | 68 l | 57 l |
| Emission standard: | Euro 6d-TEMP | Euro 6 |
| CO2 emissions: | 229-225 g/km | 140-144 g/km |
| Power: | 530 hp | 258 hp |
| Max power in: | 5500-6000 rpm. | 4000 rpm. |
| Maximum speed: | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 3.9 sec | 5.3 sec |
| Torque: | 750 Nm @ 1800-4600 rpm. | 560 Nm @ 1500-3000 rpm. |
| Model Engine: | N63B44T3 | N57D30 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4395 cm3 | 2993 cm3 |
| Engine oil capacity: | 10.5 l | 6.5-7 l |
| Coolant: | 7.2 l | |
| Fuel System: | Direct injection | Diesel Commonrail |
| Aspiration / Turbine: | Twin-power turbo | Twin-power turbo |
| Position of cylinders: | V engine | Inline |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10.5 | 16.5 |
| Piston Stroke: | 88.3 mm | 90 mm |
| Cylinder Bore: | 89 mm | 84 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 8 Steptronic | 8 Steptronic |
| Length: | 4851 mm | 4638 mm |
| Width: | 1902 mm | 1825 mm |
| Width including mirrors: | 2137 mm | |
| Height: | 1345 mm | 1404 mm |
| Wheelbase: | 2822 mm | 2810 mm |
| Front track: | 1627 mm | 1544 mm |
| Rear (Back) track: | 1642 mm | 1590 mm |
| Ride height(clearance): | 125 mm | 145 mm |
| Front overhang: | 953 mm | |
| Rear overhang: | 1076 mm | |
| Minimum volume of Luggage (trunk): | 350 l | 480 l |
| Maximum amount of Luggage (trunk): | 1300 l | |
| Front suspension: | Double wishbone | Independent, spring |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 2515 kg | 2235 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 2015 kg | 1675 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 | |
| Minimum turning circle (turning diameter): | 11.9 m | 11.8 m |
| Permitted trailer load with brakes (12%): | 1800 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 75 kg | |
| Tire size: | 245/35 R20 95Y; 275/30 R20 97Y | 225/50 R17 94W; 225/45 R18; 255/40 R18; 225/40 R19; 255/35 R19 |
| Wheel rims size: | 8J x 20; 9J x 20 | 7.5J x 17; 8J x 18; 8.5J x 18; 8J x 19; 8.5J x 19 |