2008 Audi S8 vs. 2009 Mercedes-Benz GL
To start off, 2009 Mercedes-Benz GL is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi S8. In addition, the cost of maintenance, including insurance, on 2008 Audi S8 would be higher. At 5,461 cc (8 cylinders), 2009 Mercedes-Benz GL is equipped with a bigger engine. In terms of performance, 2008 Audi S8 (444 HP @ 7000 RPM) has 62 more horse power than 2009 Mercedes-Benz GL. (382 HP @ 6000 RPM). In normal driving conditions, 2008 Audi S8 should accelerate faster than 2009 Mercedes-Benz GL. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz GL weights approximately 890 kg more than 2008 Audi S8.
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, 2008 Audi S8 (540 Nm @ 3500 RPM) has 10 more torque (in Nm) than 2009 Mercedes-Benz GL. (530 Nm @ 2800 RPM). This means 2008 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Mercedes-Benz GL.
Compare all specifications:
| 2008 Audi S8 | 2009 Mercedes-Benz GL | |
| Make | Audi | Mercedes-Benz |
| Model | S8 | GL |
| Year Released | 2008 | 2009 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 5461 cc |
| Engine Cylinders | 10 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 444 HP | 382 HP |
| Engine RPM | 7000 RPM | 6000 RPM |
| Torque | 540 Nm | 530 Nm |
| Torque RPM | 3500 RPM | 2800 RPM |
| Engine Compression Ratio | 12.5:1 | 9.0:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | AWD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1940 kg | 2830 kg |
| Vehicle Width | 1900 mm | 1910 mm |
| Wheelbase Size | 2950 mm | 3080 mm |
| Fuel Consumption Overall | 13.4 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 90 L | 100 L |
