2008 Audi A8 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 A8. In addition, the cost of maintenance, including insurance, on 2008 Audi A8 would be higher. At 5,461 cc (8 cylinders), 2009 Mercedes-Benz GL is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz GL (382 HP @ 6000 RPM) has 152 more horse power than 2008 Audi A8. (230 HP @ 4000 RPM) In normal driving conditions, 2009 Mercedes-Benz GL should accelerate faster than 2008 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz GL weights approximately 609 kg more than 2008 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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 Mercedes-Benz GL (531 Nm @ 2800 RPM) has 81 more torque (in Nm) than 2008 Audi A8. (450 Nm @ 1400 RPM). This means 2009 Mercedes-Benz GL will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A8.
Compare all specifications:
| 2008 Audi A8 | 2009 Mercedes-Benz GL | |
| Make | Audi | Mercedes-Benz |
| Model | A8 | GL |
| Year Released | 2008 | 2009 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 5461 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 230 HP | 382 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 450 Nm | 531 Nm |
| Torque RPM | 1400 RPM | 2800 RPM |
| Engine Bore Size | 83 mm | 98 mm |
| Engine Stroke Size | 91.4 mm | 90.5 mm |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 243 km/hour | 240 km/hour |
| Acceleration 0-100mph | 7.8 seconds | 6.5 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1836 kg | 2445 kg |
| Vehicle Length | 5060 mm | 5090 mm |
| Vehicle Width | 1900 mm | 1850 mm |
| Vehicle Height | 1450 mm | 1930 mm |
| Wheelbase Size | 2950 mm | 3080 mm |
| Fuel Consumption Overall | 8.4 L/100km | 14.1 L/100km |
| Fuel Tank Capacity | 90 L | 100 L |
