2007 Audi A8 vs. 2009 Audi R8
To start off, 2009 Audi R8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A8. In addition, the cost of maintenance, including insurance, on 2007 Audi A8 would be higher. At 5,204 cc (10 cylinders), 2009 Audi R8 is equipped with a bigger engine. In terms of performance, 2009 Audi R8 (518 HP @ 8000 RPM) has 242 more horse power than 2007 Audi A8. (276 HP @ 6000 RPM) In normal driving conditions, 2009 Audi R8 should accelerate faster than 2007 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A8 weights approximately 196 kg more than 2009 Audi R8.
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 Audi R8 (530 Nm @ 6500 RPM) has 170 more torque (in Nm) than 2007 Audi A8. (360 Nm @ 3750 RPM). This means 2009 Audi R8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A8. 2007 Audi A8 has automatic transmission and 2009 Audi R8 has manual transmission. 2009 Audi R8 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Audi A8 | 2009 Audi R8 | |
| Make | Audi | Audi |
| Model | A8 | R8 |
| Year Released | 2007 | 2009 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 3697 cc | 5204 cc |
| Engine Cylinders | 8 cylinders | 10 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 276 HP | 518 HP |
| Engine RPM | 6000 RPM | 8000 RPM |
| Torque | 360 Nm | 530 Nm |
| Torque RPM | 3750 RPM | 6500 RPM |
| Engine Compression Ratio | 11.0:1 | 12.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 311 km/hour |
| Acceleration 0-100mph | 7.3 seconds | 3.9 seconds |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1776 kg | 1580 kg |
| Vehicle Length | 5060 mm | 4440 mm |
| Vehicle Width | 1900 mm | 1940 mm |
| Vehicle Height | 1450 mm | 1260 mm |
| Wheelbase Size | 2950 mm | 2660 mm |
| Fuel Consumption | 8.6 L/100km | 12.4 L/100km |
| Fuel Consumption City | 17.1 L/100km | 19.6 L/100km |
| Fuel Consumption Overall | 11.7 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 90 L | 75 L |
