2009 Audi A8 vs. 2007 Mercedes-Benz GL
To start off, 2009 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Mercedes-Benz GL. In addition, the cost of maintenance, including insurance, on 2007 Mercedes-Benz GL would be higher. At 4,663 cc (8 cylinders), 2007 Mercedes-Benz GL is equipped with a bigger engine. In terms of performance, 2007 Mercedes-Benz GL (335 HP @ 6000 RPM) has 106 more horse power than 2009 Audi A8. (229 HP @ 4000 RPM) In normal driving conditions, 2007 Mercedes-Benz GL should accelerate faster than 2009 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercedes-Benz GL weights approximately 600 kg more than 2009 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, 2007 Mercedes-Benz GL (460 Nm @ 2700 RPM) has 10 more torque (in Nm) than 2009 Audi A8. (450 Nm @ 1400 RPM). This means 2007 Mercedes-Benz GL will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A8.
Compare all specifications:
| 2009 Audi A8 | 2007 Mercedes-Benz GL | |
| Make | Audi | Mercedes-Benz |
| Model | A8 | GL |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2966 cc | 4663 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 229 HP | 335 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 450 Nm | 460 Nm |
| Torque RPM | 1400 RPM | 2700 RPM |
| Engine Bore Size | 83 mm | 92.9 mm |
| Engine Stroke Size | 91.4 mm | 86 mm |
| Engine Compression Ratio | 17.0:1 | 10.7:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 243 km/hour | 235 km/hour |
| Acceleration 0-100mph | 7.8 seconds | 7.9 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1830 kg | 2430 kg |
| Vehicle Height | 1900 mm | 1850 mm |
| Wheelbase Size | 2950 mm | 3080 mm |
| Fuel Consumption Overall | 8.4 L/100km | 13.4 L/100km |
| Fuel Tank Capacity | 90 L | 100 L |
