Comparison Audi S4 (B9, facelift 2019) 3.0 TFSI V6 (349 Hp) quattro tiptronic & Audi A6 (4A,C4) 2.0 16V (140 Hp) & Audi A6 Allroad quattro (C8) 55 TDI (349 Hp) quattro Tiptronic
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| Brand: | Audi | Audi | Audi |
| Model: | S4 | A6 | A6 |
| Generation: | S4 (B9, facelift 2019) | A6 (4A,C4) | A6 Allroad quattro (C8) |
| Engine / modification: | 3.0 TFSI V6 (349 Hp) quattro tiptronic | 2.0 16V (140 Hp) | 55 TDI (349 Hp) quattro Tiptronic |
| Production start: | 2020 year | 1994 year | 2019 year |
| Production end: | 1997 year | ||
| Coupe type: | Sedan | Sedan | Combi |
| Powertrain Architecture: | Internal Combustion engine | ||
| Num. of Doors: | 4 | 4 | 5 |
| Num. of seats: | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 7.8-7.9 l/100 km | ||
| Fuel consumption / economy - extra urban: | 5.6-5.8 l/100 km | ||
| Fuel consumption / economy - combined: | 6.4-6.6 l/100 km | ||
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.29 | 0.32 | |
| Fuel tank volume: | 58 l | 80 l | 73 l |
| Combined fuel consumption (WLTP): | 7.5-8.0 l/100 km | ||
| Emission standard: | Euro 6d - TEMP - EVAP - ISC | ||
| CO2 emissions: | 168-172 g/km | ||
| Power: | 349 hp | 140 hp | 349 hp |
| Max power in: | 5800 rpm. | 3850 rpm. | |
| Maximum speed: | 250 , Electronically limited km/h | 218 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 4.7 sec | 5.2 sec | |
| CO2 emissions (WLTP): | 196-210 g/km | ||
| Torque: | 500 Nm | 185 Nm @ 4500 rpm. | 700 Nm @ 2500-3100 rpm. |
| Model Engine: | EA839 / CWGD | ACE | |
| Engine position: | Front, longitudinal | Front, longitudinal | |
| Engine displacement: | 2995 cm3 | 1984 cm3 | 2967 cm3 |
| Engine oil capacity: | 7.2 l | 3 l | |
| Coolant: | 10 l | 7 l | |
| Fuel System: | Multi-point injection | Diesel Commonrail | |
| Aspiration / Turbine: | Turbocharger / Intercooler | ||
| Position of cylinders: | Inline | V engine | |
| Valvetrain: | DOHC | DOHC | |
| Number of cylinders: | 6 | 4 | 6 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 11.2 | 10.8 | |
| Piston Stroke: | 88.9 mm | 92.8 mm | |
| Cylinder Bore: | 84.6 mm | 82.5 mm | |
| Wheel Drive: | All wheel drive (4x4) | Front wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 4 | 8 Tiptronic | |
| Number of Gears (manual transmission): | 5 | ||
| Length: | 4763 mm | 4797 mm | 4951 mm |
| Width: | 1847 mm | 1783 mm | 1902 mm |
| Width including mirrors: | 2022 mm | 2110 mm | |
| Height: | 1427 mm | 1430 mm | 1497-1542 mm |
| Wheelbase: | 2819 mm | 2687 mm | 2925 mm |
| Front track: | 1572 mm | 1520 mm | 1645 mm |
| Rear (Back) track: | 1554 mm | 1524 mm | 1611 mm |
| Front overhang: | 921 mm | ||
| Rear overhang: | 1105 mm | ||
| Minimum volume of Luggage (trunk): | 340 l | ||
| Maximum amount of Luggage (trunk): | 510 l | ||
| Front suspension: | Independent, Spring McPherson, with stabilizer | Multi-link suspension | |
| Rear suspension: | Semi-independent, spring | Multi-link independent | |
| Max weight: | 2695 kg | ||
| Front brakes: | Ventilated discs | Ventilated discs | |
| Rear brakes: | Disc | Ventilated discs | |
| Kerb Weight: | 1745 kg | 2010 kg | |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering | Electric Steering |
| Max. roof load: | 100 kg | ||
| Permitted trailer load with brakes (8%): | 2000 kg | ||
| Minimum turning circle (turning diameter): | 11.6 m | 11.3 m | 12.2 m |
| Permitted trailer load with brakes (12%): | 2500 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Permitted towbar download: | 100 kg | ||
| Tire size: | 245/40 R18 | ||
| Wheel rims size: | 8J x 18 | R 15 |