2005 Audi A8 vs. 2007 Audi R8
To start off, 2007 Audi R8 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi A8. In addition, the cost of maintenance, including insurance, on 2005 Audi A8 would be higher. At 5,998 cc, 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (450 HP @ 6300 RPM) has 36 more horse power than 2007 Audi R8. (414 HP @ 7800 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2007 Audi R8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 580 kg more than 2007 Audi R8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2005 Audi A8 (560 Nm) has 130 more torque (in Nm) than 2007 Audi R8. (430 Nm). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi R8.
Compare all specifications:
| 2005 Audi A8 | 2007 Audi R8 | |
| Make | Audi | Audi |
| Model | A8 | R8 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 5998 cc | 4163 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 414 HP |
| Engine RPM | 6300 RPM | 7800 RPM |
| Torque | 560 Nm | 430 Nm |
| Engine Bore Size | 84.1 mm | 84.5 mm |
| Engine Stroke Size | 90 mm | 92.8 mm |
| Engine Compression Ratio | 11.0:1 | 12.5:1 |
| Drive Type | 4WD | AWD |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2145 kg | 1565 kg |
| Vehicle Length | 5200 mm | 4590 mm |
| Vehicle Width | 1900 mm | 1910 mm |
| Vehicle Height | 1460 mm | 1260 mm |
| Wheelbase Size | 3080 mm | 2660 mm |
| Fuel Consumption Overall | 13.8 L/100km | 13.6 L/100km |
| Fuel Tank Capacity | 90 L | 75 L |
