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 5,980 cc (12 cylinders), 2008 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2008 Mercedes-Benz SL (604 HP @ 4800 RPM) has 110 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 485 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, both vehicles can yield 1,000 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles.
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 | 5980 cc |
| Engine Cylinders | 12 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 494 HP | 604 HP |
| Engine RPM | 3750 RPM | 4800 RPM |
| Torque | 1000 Nm | 1000 Nm |
| Torque RPM | 1750 RPM | 2000 RPM |
| Engine Bore Size | 83 mm | 82.6 mm |
| Engine Stroke Size | 91.4 mm | 93 mm |
| Engine Compression Ratio | 16.0:1 | 9.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 5.5 seconds | 4.2 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2605 kg | 2120 kg |
| Vehicle Length | 5070 mm | 4540 mm |
| Vehicle Width | 2010 mm | 1830 mm |
| Vehicle Height | 1700 mm | 1300 mm |
| Wheelbase Size | 3010 mm | 2570 mm |
| Fuel Consumption Overall | 11.3 L/100km | 15.1 L/100km |
| Fuel Tank Capacity | 100 L | 80 L |
