Comparison Audi Q7 (Typ 4L) 4.2 FSI V8 (350 Hp) quattro Tiptronic & Mercedes-Benz S-class Long (W221) S 450 (340 Hp) G-TRONIC
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| Brand: | Audi | Mercedes-Benz |
| Model: | Q7 | S-class |
| Generation: | Q7 (Typ 4L) | S-class Long (W221) |
| Engine / modification: | 4.2 FSI V8 (350 Hp) quattro Tiptronic | S 450 (340 Hp) G-TRONIC |
| Production start: | 2005 year | 2006 year |
| Production end: | 2008 year | 2009 year |
| Coupe type: | SUV | Sedan |
| Num. of Doors: | 5 | 4 |
| Num. of seats: | 7 | 5 |
| Fuel consumption / economy - urban: | 18.1 l/100 km | 16.6-16.8 l/100 km |
| Fuel consumption / economy - extra urban: | 13.1 l/100 km | 8.2-8.4 l/100 km |
| Fuel consumption / economy - combined: | 11.1 l/100 km | 11.3-11.5 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.37 | |
| Fuel tank volume: | 100 l | 90 l |
| Emission standard: | Euro 4 | |
| CO2 emissions: | 326 g/km | 269-274 g/km |
| Power: | 350 hp | 340 hp |
| Max power in: | 6800 rpm. | 6000 rpm. |
| Maximum speed: | 244 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 7.4 sec | 5.9 sec |
| Torque: | 440 Nm @ 3500 rpm. | 460 Nm @ 2700-5000 rpm. |
| Model Engine: | BAR | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4163 cm3 | 4663 cm3 |
| Engine oil capacity: | 9.1 l | |
| Fuel System: | Direct injection | Multi-point injection |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | DOHC | |
| Number of cylinders: | 8 | 8 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 12.5 | 10.5 |
| Piston Stroke: | 92.8 mm | 86 mm |
| Cylinder Bore: | 84.5 mm | 92.9 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 6 Tiptronic | 7G-TRONIC |
| Length: | 5086 mm | 5209 mm |
| Width: | 1983 mm | 1872 mm |
| Width including mirrors: | 2177 mm | 2115 mm |
| Height: | 1737 mm | 1473 mm |
| Wheelbase: | 3002 mm | 3165 mm |
| Front track: | 1651 mm | 1604 mm |
| Rear (Back) track: | 1676 mm | 1606 mm |
| Ride height(clearance): | 240-205 mm | |
| Front overhang: | 965 mm | 871 mm |
| Rear overhang: | 1119 mm | 1173 mm |
| Minimum volume of Luggage (trunk): | 775 l | |
| Maximum amount of Luggage (trunk): | 2035 l | 560 l |
| Front suspension: | Double wishbone | Pneumatic elastic element |
| Rear suspension: | Independent, spring | Pneumatic elastic element |
| Max weight: | 2935 kg | 2565 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 2240 kg | 1910 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Minimum turning circle (turning diameter): | 12 m | 12.2 m |
| Tire size: | 255/55 R18 | 235/55 R17 |
| Wheel rims size: | R18 | R17 |