Comparison BMW 7 Series (E23, facelift 1983) 745i (252 Hp) Automatic & BMW 7 Series (E32, facelift 1992) 740i (286 Hp) Automatic & Audi A6 Limousine (4G, C7) 3.0 TDI V6 (245 Hp) quattro S tronic & Audi A6 Avant (4G, C7 facelift 2014) 2.0 TFSI (252 Hp) S tronic
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| Brand: | BMW | BMW | Audi | Audi |
| Model: | 7 Series | 7 Series | A6 | A6 |
| Generation: | 7 Series (E23, facelift 1983) | 7 Series (E32, facelift 1992) | A6 Limousine (4G, C7) | A6 Avant (4G, C7 facelift 2014) |
| Engine / modification: | 745i (252 Hp) Automatic | 740i (286 Hp) Automatic | 3.0 TDI V6 (245 Hp) quattro S tronic | 2.0 TFSI (252 Hp) S tronic |
| Production start: | 1983 year | 1992 year | 2011 year | 2014 year |
| Production end: | 1986 year | 1994 year | 2014 year | 2018 year |
| Coupe type: | Sedan | Sedan | Sedan | Combi |
| Num. of Doors: | 4 | 4 | 4 | 5 |
| Num. of seats: | 5 | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 16.6 l/100 km | 17.5 l/100 km | 7.2 l/100 km | 7.4 l/100 km |
| Fuel consumption / economy - extra urban: | 8.4 l/100 km | 8.2 l/100 km | 5.2 l/100 km | 5.2 l/100 km |
| Fuel consumption / economy - combined: | 11.8 l/100 km | 11.9 l/100 km | 5.9 l/100 km | 6.0 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.40 | 0.32 | 0.28 | 0.30 |
| Fuel tank volume: | 100 l | 90 l | 75 l | 65 l |
| Emission standard: | Euro 5 | Euro 6 | ||
| CO2 emissions: | 156 g/km | 140 g/km | ||
| Power: | 252 hp | 286 hp | 245 hp | 252 hp |
| Max power in: | 4900 rpm. | 5800 rpm. | 4000-4500 rpm. | 4900-5900 rpm. |
| Maximum speed: | 227 km/h | 240 km/h | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 7.9 sec | 7.4 sec | 6.1 sec | 6.9 sec |
| Torque: | 380 Nm @ 2200 rpm. | 400 Nm @ 4500 rpm. | 580 Nm @ 1750-2500 rpm. | 370 Nm @ 1600-4700 rpm. |
| Model Engine: | M102B34 | M60B40 | CDUC, CDUD, CKVB, CKVC | CYNB, CYPA |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 3430 cm3 | 3982 cm3 | 2967 cm3 | 1984 cm3 |
| Engine oil capacity: | 7.5 l | 6.4 l | 4.7 l | |
| Coolant: | 12.5 l | 11.5 l | 8.5 l | |
| Fuel System: | Multi-point injection | Multi-point injection | Diesel Commonrail | Direct injection |
| Aspiration / Turbine: | Turbocharger | Turbo / Intercooler (Turbocharging / Intercooler) | Turbo / Intercooler (Turbocharging / Intercooler) | |
| Position of cylinders: | Inline | V engine | V engine | Inline |
| Valvetrain: | DOHC | DOHC | DOHC | |
| Number of cylinders: | 6 | 8 | 6 | 4 |
| Number of valves per cylinder: | 2 | 4 | 4 | 4 |
| Compression ratio: | 8 | 10 | 16.8 | 9.6 |
| Piston Stroke: | 86 mm | 80 mm | 91.4 mm | 92.8 mm |
| Cylinder Bore: | 92 mm | 89 mm | 83 mm | 82.5 mm |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) | Front wheel drive | |
| Number of Gears (automatic transmission): | 4 | 5 | 7 S tronic | 7 S tronic |
| Length: | 4860 mm | 4910 mm | 4915 mm | 4943 mm |
| Width: | 1800 mm | 1845 mm | 1874 mm | 1874 mm |
| Width including mirrors: | 2086 mm | 2086 mm | ||
| Height: | 1430 mm | 1411 mm | 1468 mm | 1461-1482 mm |
| Wheelbase: | 2795 mm | 2832 mm | 2912 mm | 2912 mm |
| Front track: | 1502 mm | 1530 mm | 1627 mm | 1627 mm |
| Rear (Back) track: | 1524 mm | 1558 mm | 1618 mm | 1618 mm |
| Ride height(clearance): | 132 mm | |||
| Front overhang: | 912 mm | 930 mm | ||
| Rear overhang: | 1091 mm | 1101 mm | ||
| Minimum volume of Luggage (trunk): | 480 l | 500 l | 530 l | 565 l |
| Maximum amount of Luggage (trunk): | 995 l | 1680 l | ||
| Front suspension: | Independent, Spring McPherson, with stabilizer | Coil spring | Multi-link suspension | Multi-link suspension |
| Rear suspension: | Independent, spring multi-link with stabilizer | Helical spring | Independent on trapezoidal lever | Independent on trapezoidal lever |
| Max weight: | 2100 kg | 2310 kg | 2330 kg | 2290 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1590 kg | 1790 kg | 1720 kg | 1660 kg |
| ABS: | yes | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | Electric Steering | Electric Steering | |
| Max. roof load: | 100 kg | 100 kg | ||
| Permitted trailer load with brakes (8%): | 2100 kg | 1800 kg | ||
| Minimum turning circle (turning diameter): | 11.6 m | 11.6 m | 11.9 m | 11.9 m |
| Permitted trailer load with brakes (12%): | 1600 kg | |||
| Permitted trailer load without brakes: | 750 kg | 750 kg | ||
| Permitted towbar download: | 85 kg | 85 kg | ||
| Tire size: | 195/70 R14 | 225/60 R15 | 225/55 R17 | 225/55 R17 |
| Wheel rims size: | 6.5J x 14 | R15 | 8J x 17 | 8.0J x 17 |