2009 Audi Q7 vs. 2008 Mercedes-Benz SL
To start off, 2009 Audi Q7 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 2008 Mercedes-Benz SL would be higher. At 5,934 cc (12 cylinders), 2009 Audi Q7 is equipped with a bigger engine. In terms of performance, 2008 Mercedes-Benz SL (510 HP @ 6100 RPM) has 16 more horse power than 2009 Audi Q7. (494 HP @ 3750 RPM) In normal driving conditions, 2008 Mercedes-Benz SL should accelerate faster than 2009 Audi Q7. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi Q7 weights approximately 650 kg more than 2008 Mercedes-Benz SL.
Because 2009 Audi Q7 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 2009 Audi Q7 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2009 Audi Q7 (1,000 Nm @ 1750 RPM) has 280 more torque (in Nm) than 2008 Mercedes-Benz SL. (720 Nm @ 2600 RPM). This means 2009 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 2008 Mercedes-Benz SL.
Compare all specifications:
| 2009 Audi Q7 | 2008 Mercedes-Benz SL | |
| Make | Audi | Mercedes-Benz |
| Model | Q7 | SL |
| Year Released | 2009 | 2008 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5934 cc | 5439 cc |
| Engine Cylinders | 12 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 494 HP | 510 HP |
| Engine RPM | 3750 RPM | 6100 RPM |
| Torque | 1000 Nm | 720 Nm |
| Torque RPM | 1750 RPM | 2600 RPM |
| Engine Bore Size | 83 mm | 97 mm |
| Engine Stroke Size | 91.4 mm | 92 mm |
| Engine Compression Ratio | 16.0:1 | 9.0:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 5.5 seconds | 4.7 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2605 kg | 1955 kg |
| Vehicle Length | 5070 mm | 4540 mm |
| Vehicle Width | 2010 mm | 1820 mm |
| Vehicle Height | 1700 mm | 1300 mm |
| Wheelbase Size | 3010 mm | 2570 mm |
| Fuel Consumption Overall | 11.3 L/100km | 14.6 L/100km |
| Fuel Tank Capacity | 100 L | 80 L |
