Comparison BMW 4 Series Coupe (F32, facelift 2017) 435d (313 Hp) xDrive Steptronic & BMW 8 Series Convertible (G14) 840i (333 Hp) Steptronic
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| Brand: | BMW | BMW |
| Model: | 4 Series | 8 Series |
| Generation: | 4 Series Coupe (F32, facelift 2017) | 8 Series Convertible (G14) |
| Engine / modification: | 435d (313 Hp) xDrive Steptronic | 840i (333 Hp) Steptronic |
| Production start: | 2017 year | 2020 year |
| Production end: | 2020 year | |
| Coupe type: | Coupe | Cabriolet |
| Num. of Doors: | 2 | 2 |
| Num. of seats: | 4 | 4 |
| Fuel consumption / economy - urban: | 6.4-6.6 l/100 km | |
| Fuel consumption / economy - extra urban: | 4.9-5.0 l/100 km | |
| Fuel consumption / economy - combined: | 5.4-5.6 l/100 km | |
| Fuel Type: | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | 0.29 |
| Fuel tank volume: | 57 l | 68 l |
| Emission standard: | Euro 6 | Euro 6d |
| CO2 emissions: | 143-147 g/km | |
| Power: | 313 hp | 333 hp |
| Max power in: | 4400 rpm. | 5500-6250 rpm. |
| Maximum speed: | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 4.7 sec | 5.5 sec |
| Torque: | 630 Nm @ 1500-2500 rpm. | 500 Nm @ 1700-4000 rpm. |
| Model Engine: | N57D30 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2993 cm3 | 2998 cm3 |
| Engine oil capacity: | 7 l | 6.5 l |
| Fuel System: | Diesel Commonrail | Direct injection |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | VALVETRONIC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 16.5 | 11 |
| Piston Stroke: | 90 mm | 94.6 mm |
| Cylinder Bore: | 84 mm | 82 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | 8 Steptronic |
| Length: | 4640 mm | 4843 mm |
| Width: | 1825 mm | 1902 mm |
| Height: | 1392 mm | 1339 mm |
| Wheelbase: | 2810 mm | 2822 mm |
| Front track: | 1543 mm | 1627 mm |
| Rear (Back) track: | 1589 mm | 1642 mm |
| Ride height(clearance): | 145 mm | 118 mm |
| Minimum volume of Luggage (trunk): | 445 l | 350 l |
| Front suspension: | Independent, spring | Double wishbone |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 2145 kg | 2340 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1625 kg | 1840 kg |
| ABS: | 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): | 11.8 m | 11.6 m |
| Permitted trailer load with brakes (12%): | 1800 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 75 kg | |
| Tire size: | 225/50 R17; 225/45 R18; 255/40 R18; 225/40 R19; 255/35 R19 | Front wheel tires: 245/45 R18 100Y XL |
| Wheel rims size: | 7.5J x 17; 8J x 18; 8.5J x 18; 8J x 19; 8.5J x 19 | Front wheel rims: 8J x 18 |