Comparison Audi A7 Sportback (C7 facelift 2014) 3.0 T V6 (333 Hp) quattro Tiptronic & Mercedes-Benz S-class Long (W221) S 420 CDI (320 Hp) G-TRONIC
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| Brand: | Audi | Mercedes-Benz |
| Model: | A7 | S-class |
| Generation: | A7 Sportback (C7 facelift 2014) | S-class Long (W221) |
| Engine / modification: | 3.0 T V6 (333 Hp) quattro Tiptronic | S 420 CDI (320 Hp) G-TRONIC |
| Production start: | 2015 year | 2006 year |
| Production end: | 2016 year | 2009 year |
| Coupe type: | Hatchback | Sedan |
| Num. of Doors: | 5 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 11.8 l/100 km | 13.0 l/100 km |
| Fuel consumption / economy - extra urban: | 6.2 l/100 km | 7.2 l/100 km |
| Fuel consumption / economy - combined: | 9.8 l/100 km | 9.4 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.28 | |
| Fuel tank volume: | 75 l | 90 l |
| Emission standard: | EURO VI | |
| CO2 emissions: | 176 g/km | 247-252 g/km |
| Power: | 333 hp | 320 hp |
| Max power in: | 5300-6500 rpm. | 3600 rpm. |
| Maximum speed: | 209 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 5.5 sec | 6.6 sec |
| Torque: | 440 Nm @ 2900-5300 rpm. | 730 Nm @ 2200 rpm. |
| Model Engine: | CREC, CTDA | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2995 cm3 | 3997 cm3 |
| Engine oil capacity: | 6.8 l | |
| Fuel System: | Direct injection | Diesel Commonrail |
| Aspiration / Turbine: | Mechanical supercharging (Compressor) | Turbocharger / Intercooler |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | DOHC | DOHC |
| Number of cylinders: | 6 | 8 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10.6 | 18 |
| Piston Stroke: | 89 mm | 86 mm |
| Cylinder Bore: | 84.5 mm | 86 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Tiptronic | 7G-TRONIC |
| Length: | 4974 mm | 5209 mm |
| Width: | 1911 mm | 1872 mm |
| Width including mirrors: | 2139 mm | 2115 mm |
| Height: | 1420 mm | 1473 mm |
| Wheelbase: | 2914 mm | 3165 mm |
| Front track: | 1644 mm | 1604 mm |
| Rear (Back) track: | 1635 mm | 1606 mm |
| Front overhang: | 937 mm | 871 mm |
| Rear overhang: | 1123 mm | 1173 mm |
| Minimum volume of Luggage (trunk): | 535 l | 560 l |
| Maximum amount of Luggage (trunk): | 1390 l | |
| Front suspension: | Multi-link suspension | Pneumatic elastic element |
| Rear suspension: | Independent on trapezoidal lever | Pneumatic elastic element |
| Max weight: | 2420 kg | 2660 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc |
| Kerb Weight: | 1945 kg | 2065 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.9 m | 12.2 m |
| Tire size: | 255/40 R19 | 235/55 R17 |
| Wheel rims size: | R19 | 8J x 17 |