Comparison Audi S4 (B9, facelift 2019) 3.0 TFSI V6 (349 Hp) quattro tiptronic & Mercedes-Benz R-class (W251) Long R 320 CDI V6 (224 Hp) 4MATIC G-TRONIC
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| Brand: | Audi | Mercedes-Benz |
| Model: | S4 | R-class |
| Generation: | S4 (B9, facelift 2019) | R-class (W251) Long |
| Engine / modification: | 3.0 TFSI V6 (349 Hp) quattro tiptronic | R 320 CDI V6 (224 Hp) 4MATIC G-TRONIC |
| Production start: | 2020 year | 2007 year |
| Production end: | 2009 year | |
| Coupe type: | Sedan | Combi |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 4 | 5 |
| Num. of seats: | 5 | 5-7 |
| Fuel consumption / economy - combined: | 9.3 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.29 | |
| Fuel tank volume: | 58 l | 80 l |
| Emission standard: | EURO V | |
| CO2 emissions: | 246 g/km | |
| Power: | 349 hp | 224 hp |
| Maximum speed: | 250 , Electronically limited km/h | 222 km/h |
| Acceleration from 0 to 100 km/h: | 4.7 sec | 8.8 sec |
| Torque: | 500 Nm | 510 Nm |
| Model Engine: | EA839 / CWGD | |
| Engine position: | Front, longitudinal | |
| Engine displacement: | 2995 cm3 | 2987 cm3 |
| Engine oil capacity: | 7.2 l | |
| Coolant: | 10 l | |
| Fuel System: | Diesel Commonrail | |
| Maximum engine speed: | 4500 . rpm. | |
| Aspiration / Turbine: | Turbocharger / Intercooler | |
| Position of cylinders: | V engine | |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 11.2 | 16.5 |
| Piston Stroke: | 88.9 mm | 92 mm |
| Cylinder Bore: | 84.6 mm | 83 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 7G-TRONIC | |
| Length: | 4763 mm | 5157 mm |
| Width: | 1847 mm | 1922 mm |
| Width including mirrors: | 2022 mm | |
| Height: | 1427 mm | 1659 mm |
| Wheelbase: | 2819 mm | 3215 mm |
| Front track: | 1572 mm | |
| Rear (Back) track: | 1554 mm | |
| Minimum volume of Luggage (trunk): | 340 l | |
| Maximum amount of Luggage (trunk): | 2385 l | |
| Front suspension: | Double wishbone | |
| Rear suspension: | Independent, spring multi-link with stabilizer | |
| Max weight: | 2895 kg | |
| Front brakes: | Disc | |
| Rear brakes: | Disc | |
| Kerb Weight: | 1745 kg | 2295 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering |
| Max. roof load: | 100 kg | |
| Minimum turning circle (turning diameter): | 11.6 m | |
| Permitted trailer load with brakes (12%): | 2100 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Tire size: | 245/40 R18 | 235/65 R17 |
| Wheel rims size: | 8J x 18 | 7.5J x 17 |