Comparison Renault 21 (B48) 1.9 D (65 Hp) & Audi A6 Avant (4G, C7 facelift 2014) 2.0 TFSI (252 Hp) quattro S tronic & BMW 4 Series Gran Coupe (F36) 420d (190 Hp) Steptronic
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| Brand: | Renault | Audi | BMW |
| Model: | 21 | A6 | 4 Series |
| Generation: | 21 (B48) | A6 Avant (4G, C7 facelift 2014) | 4 Series Gran Coupe (F36) |
| Engine / modification: | 1.9 D (65 Hp) | 2.0 TFSI (252 Hp) quattro S tronic | 420d (190 Hp) Steptronic |
| Production start: | 1989 year | 2015 year | 2015 year |
| Production end: | 1993 year | 2016 year | 2016 year |
| Coupe type: | Sedan | Combi | Coupe |
| Num. of Doors: | 4 | 5 | 5 |
| Num. of seats: | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 7.3 l/100 km | 8.5 l/100 km | 4.7-5.1 l/100 km |
| Fuel consumption / economy - extra urban: | 4.6 l/100 km | 6.0 l/100 km | 3.6-3.9 l/100 km |
| Fuel consumption / economy - combined: | 6.1 l/100 km | 6.9 l/100 km | 4.0-4.3 l/100 km |
| Fuel Type: | Diesel | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.30 | 0.28 | |
| Fuel tank volume: | 66 l | 75 l | 57 l |
| Emission standard: | EURO VI | EURO VI | |
| CO2 emissions: | 158 g/km | 106-114 g/km | |
| Power: | 65 hp | 252 hp | 190 hp |
| Max power in: | 4500 rpm. | 5000-6000 rpm. | 4000 rpm. |
| Maximum speed: | 155 km/h | 250 km/h | 231 km/h |
| Acceleration from 0 to 100 km/h: | 16 sec | 6.7 sec | 7.3 sec |
| Torque: | 121 Nm/2250 rpm. | 370 Nm/1600-4500 rpm. | 400 Nm @ 1750-2500 rpm. |
| Engine position: | Front, transverse | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1870 cm3 | 1984 cm3 | 1995 cm3 |
| Engine oil capacity: | 4.7 l | 5.0 l | |
| Coolant: | 8.5 l | 7.0 l | |
| Fuel System: | Diesel - Standard diesel injection (SDI) | Direct injection | Diesel Commonrail |
| Aspiration / Turbine: | Turbo / Intercooler (Turbocharging / Intercooler) | Twin-power turbo | |
| Position of cylinders: | Inline | Inline | Inline |
| Valvetrain: | OHC | DOHC | |
| Number of cylinders: | 4 | 4 | 4 |
| Number of valves per cylinder: | 2 | 4 | 4 |
| Compression ratio: | 21.5 | 9.6 | 16.5 |
| Piston Stroke: | 93 mm | 92.8 mm | 90 mm |
| Cylinder Bore: | 80 mm | 82.5 mm | 84 mm |
| Wheel Drive: | Front wheel drive | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | - | 7 S tronic | 8 Steptronic |
| Number of Gears (manual transmission): | 5 | ||
| Length: | 4530 mm | 4943 mm | 4638 mm |
| Width: | 1730 mm | 1874 mm | 1825 mm |
| Width including mirrors: | 2086 mm | ||
| Height: | 1415 mm | 1461-1482 mm | 1389 mm |
| Wheelbase: | 2660 mm | 2912 mm | 2810 mm |
| Front track: | 1430 mm | 1627 mm | 1545 mm |
| Rear (Back) track: | 1400 mm | 1618 mm | 1594 mm |
| Ride height(clearance): | 130 mm | ||
| Front overhang: | 930 mm | ||
| Rear overhang: | 1101 mm | ||
| Minimum volume of Luggage (trunk): | 490 l | 565 l | 480 l |
| Maximum amount of Luggage (trunk): | 1680 l | 1300 l | |
| Front suspension: | The depreciated rack | Multi-link suspension | Independent, spring |
| Rear suspension: | Torsion | Independent on trapezoidal lever | Multi-link independent |
| Max weight: | 1495 kg | 2355 kg | 2100 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Drum | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1040 kg | 1725 kg | 1540 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 | Electric Steering |
| Max. roof load: | 100 kg | 75 kg | |
| Permitted trailer load with brakes (8%): | 1800 kg | ||
| Minimum turning circle (turning diameter): | 11.9 m | 11.3 m | |
| Permitted trailer load with brakes (12%): | 1600 kg | 1600 kg | |
| Permitted trailer load without brakes: | 750 kg | 745 kg | |
| Permitted towbar download: | 85 kg | 75 kg | |
| Tire size: | 195/55 R15 | 225/55 R17 | 225/50 R17 94V; 225/45 R18; 255/40 R18; 225/40 R19; 255/35 R19 |
| Wheel rims size: | 8.0J x 17 | 7.5J x 17; 8J x 18; 8.5J x 18; 8J x 19; 8.5J x 19 |