Comparison BMW 8 Series (E31) 840i 4.0 (286 Hp) & Audi A4 (B9 8W, facelift 2018) 45 TFSI (245 Hp) quattro S tronic & BMW 7 Series (E32) 735i (211 Hp) cat
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| Brand: | BMW | Audi | BMW |
| Model: | 8 Series | A4 | 7 Series |
| Generation: | 8 Series (E31) | A4 (B9 8W, facelift 2018) | 7 Series (E32) |
| Engine / modification: | 840i 4.0 (286 Hp) | 45 TFSI (245 Hp) quattro S tronic | 735i (211 Hp) cat |
| Production start: | 1993 year | 2019 year | 1986 year |
| Production end: | 1996 year | 2019 year | 1992 year |
| Coupe type: | Coupe | Sedan | Sedan |
| Num. of Doors: | 2 | 4 | 4 |
| Num. of seats: | 4 | 5 | 5 |
| Fuel consumption / economy - urban: | 19.2 l/100 km | 8.4-8.6 l/100 km | 16.8 l/100 km |
| Fuel consumption / economy - extra urban: | 9 l/100 km | 5.2-5.6 l/100 km | 7.7 l/100 km |
| Fuel consumption / economy - combined: | 6.4-6.7 l/100 km | 11.4 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | ||
| Fuel tank volume: | 90 l | 58 l | 90 l |
| Emission standard: | Euro 6d - TEMP | ||
| CO2 emissions: | 146-153 g/km | ||
| Power: | 286 hp | 245 hp | 211 hp |
| Max power in: | 5800 rpm. | 5000-6500 rpm. | 5700 rpm. |
| Maximum speed: | 250 km/h | 250 km/h | 230 km/h |
| Acceleration from 0 to 100 km/h: | 6.9 sec | 5.8 sec | 8.3 sec |
| Torque: | 400 Nm @ 4500 rpm. | 370 Nm @ 1600-4300 rpm. | 320 Nm @ 4000 rpm. |
| Model Engine: | M60B40 | DKNA | M30B35 |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 3982 cm3 | 1984 cm3 | 3430 cm3 |
| Engine oil capacity: | 7.5 l | 5.2 l | 5.75 l |
| Coolant: | 12.5 l | 12 l | |
| Fuel System: | Multi-point injection | Direct injection | Multi-point injection |
| Aspiration / Turbine: | Turbocharger | ||
| Position of cylinders: | V engine | Inline | Inline |
| Valvetrain: | DOHC | DOHC | |
| Number of cylinders: | 8 | 4 | 6 |
| Number of valves per cylinder: | 4 | 4 | 2 |
| Compression ratio: | 10 | 9 | |
| Piston Stroke: | 80 mm | 86 mm | |
| Cylinder Bore: | 89 mm | 92 mm | |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 5 | 7 S tronic | 4 |
| Number of Gears (manual transmission): | 6 | 5 | |
| Length: | 4780 mm | 4738 mm | 4910 mm |
| Width: | 1855 mm | 1842 mm | 1845 mm |
| Width including mirrors: | 2022 mm | ||
| Height: | 1340 mm | 1428 mm | 1411 mm |
| Wheelbase: | 2648 mm | 2820 mm | 2832 mm |
| Front track: | 1554 mm | 1572 mm | 1527 mm |
| Rear (Back) track: | 1562 mm | 1555 mm | 1550 mm |
| Front overhang: | 880 mm | ||
| Rear overhang: | 1038 mm | ||
| Minimum volume of Luggage (trunk): | 320 l | 480 l | 500 l |
| Front suspension: | Wishbone | Multi-link suspension | Coil spring |
| Rear suspension: | Helical spring | Multi-link independent | Helical spring |
| Max weight: | 2180 kg | 2110 kg | 2150 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs | Disc |
| Kerb Weight: | 1780 kg | 1540 kg | 1600 kg |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering | Hydraulic Steering |
| Max. roof load: | 90 kg | ||
| Permitted trailer load with brakes (8%): | 1900 kg | ||
| Minimum turning circle (turning diameter): | 11.6 m | ||
| Permitted trailer load with brakes (12%): | 1700 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Permitted towbar download: | 80 kg | ||
| Tire size: | 235/50 R16 | 225/50 R17 | 225/60 R15 |
| Wheel rims size: | R16 | 7.5 J x 17 | R15 |