Comparison BMW 4 Series Gran Coupe (F36, facelift 2017) 420i (184 Hp) Steptronic & Audi A6 Limousine (4G, C7 facelift 2016) 3.0 TDI (320 Hp) quattro Tiptronic & Audi A6 (4A,C4) 2.5 TDI (115 Hp)
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| Brand: | BMW | Audi | Audi |
| Model: | 4 Series | A6 | A6 |
| Generation: | 4 Series Gran Coupe (F36, facelift 2017) | A6 Limousine (4G, C7 facelift 2016) | A6 (4A,C4) |
| Engine / modification: | 420i (184 Hp) Steptronic | 3.0 TDI (320 Hp) quattro Tiptronic | 2.5 TDI (115 Hp) |
| Production start: | 2017 year | 2016 year | 1994 year |
| Production end: | 1997 year | ||
| Coupe type: | Coupe | Sedan | Sedan |
| Num. of Doors: | 4 | 4 | 4 |
| Num. of seats: | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 7.1-7.6 l/100 km | 7.3-7.5 l/100 km | 7.5 l/100 km |
| Fuel consumption / economy - extra urban: | 4.5-4.7 l/100 km | 5.3-5.5 l/100 km | 4.4 l/100 km |
| Fuel consumption / economy - combined: | 5.5-5.8 l/100 km | 6.0-6.2 l/100 km | 6.1 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Diesel | Diesel |
| Drag coefficient: | 0.29 | 0.28 | 0.32 |
| Fuel tank volume: | 60 l | 73 l | 80 l |
| Emission standard: | Euro 6 | EURO VI | |
| CO2 emissions: | 127-134 g/km | 159-164 g/km | |
| Power: | 184 hp | 320 hp | 115 hp |
| Max power in: | 5000 rpm. | 3900-4600 rpm. | 4000 rpm. |
| Maximum speed: | 236 km/h | 250 km/h | 195 km/h |
| Acceleration from 0 to 100 km/h: | 7.7 sec | 5.0 sec | 11.2 sec |
| Torque: | 270 Nm @ 1350-4600 rpm. | 650 Nm/1400-2800 rpm. | 265 Nm @ 1900 rpm. |
| Model Engine: | B48B20 | AAT | |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1998 cm3 | 2967 cm3 | 2461 cm3 |
| Engine oil capacity: | 5.25 l | 8.0 l | 5.0 l |
| Coolant: | 11.5 l | 6.5 l | |
| Fuel System: | Direct injection | Diesel Commonrail | Diesel - Standard diesel injection (SDI) |
| Aspiration / Turbine: | Twin-power turbo | Turbo / Intercooler (Turbocharging / Intercooler) | Turbocharging |
| Position of cylinders: | Inline | V engine | Inline |
| Valvetrain: | DOHC | OHC | |
| Number of cylinders: | 4 | 6 | 5 |
| Number of valves per cylinder: | 4 | 4 | 2 |
| Compression ratio: | 11 | 15.5 | 20 |
| Piston Stroke: | 94.6 mm | 91.4 mm | 95.5 mm |
| Cylinder Bore: | 82 mm | 83 mm | 81 mm |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) | Front wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic | 8 tiptronic | 4 |
| Number of Gears (manual transmission): | 6 | ||
| Length: | 4640 mm | 4932 mm | 4797 mm |
| Width: | 1825 mm | 1874 mm | 1783 mm |
| Width including mirrors: | 2086 mm | ||
| Height: | 1389 mm | 1455 mm | 1430 mm |
| Wheelbase: | 2810 mm | 2912 mm | 2687 mm |
| Front track: | 1545 mm | 1627 mm | 1520 mm |
| Rear (Back) track: | 1592 mm | 1618 mm | 1524 mm |
| Ride height(clearance): | 130 mm | ||
| Front overhang: | 925 mm | ||
| Rear overhang: | 1095 mm | ||
| Minimum volume of Luggage (trunk): | 480 l | 530 l | |
| Maximum amount of Luggage (trunk): | 1300 l | 995 l | 510 l |
| Front suspension: | Independent, spring | Multi-link suspension | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Multi-link independent | Independent on trapezoidal lever | Semi-independent, spring |
| Max weight: | 2100 kg | 2445 kg | 2010 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc | |
| Kerb Weight: | 1540 kg | 1835 kg | 1460 kg |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering | Hydraulic Steering |
| Max. roof load: | 75 kg | 100 kg | 100 kg |
| Permitted trailer load with brakes (8%): | 2100 kg | 1700 kg | |
| Minimum turning circle (turning diameter): | 11.3 m | 11.9 m | 11.4 m |
| Permitted trailer load with brakes (12%): | 1500 kg | 2100 kg | 1500 kg |
| Permitted trailer load without brakes: | 695 kg | 750 kg | 750 kg |
| Permitted towbar download: | 75 kg | 85 kg | 50 kg |
| Tire size: | 225/50 R17; 225/45 R18; 255/40 R18; 225/40 R19; 255/35 R19 | 245/45 R18 | 195/65 R15 |
| Wheel rims size: | 7.5J x 17; 8J x 18; 8.5J x 18; 8J x 19; 8.5J x 19 | 8 J x 18 | 6J x 15 |