2009 Audi R8 vs. 2007 Audi S8
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 S8. In addition, the cost of maintenance, including insurance, on 2007 Audi S8 would be higher. At 5,204 cc (10 cylinders), 2007 Audi S8 is equipped with a bigger engine. In terms of performance, 2007 Audi S8 (444 HP @ 7000 RPM) has 24 more horse power than 2009 Audi R8. (420 HP @ 7800 RPM) In normal driving conditions, 2007 Audi S8 should accelerate faster than 2009 Audi R8. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi S8 weights approximately 1045 kg more than 2009 Audi R8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are all wheel drive (AWD) - 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 Audi S8 (540 Nm @ 3500 RPM) has 110 more torque (in Nm) than 2009 Audi R8. (430 Nm @ 4500 RPM). This means 2007 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi R8. 2007 Audi S8 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 S8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi R8 | 2007 Audi S8 | |
| Make | Audi | Audi |
| Model | R8 | S8 |
| Year Released | 2009 | 2007 |
| Body Type | Coupe | Sedan |
| Engine Position | Middle | Front |
| Engine Size | 4163 cc | 5204 cc |
| Engine Cylinders | 8 cylinders | 10 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 420 HP | 444 HP |
| Engine RPM | 7800 RPM | 7000 RPM |
| Torque | 430 Nm | 540 Nm |
| Torque RPM | 4500 RPM | 3500 RPM |
| Engine Compression Ratio | 12.5:1 | 12.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | AWD | AWD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 895 kg | 1940 kg |
| Vehicle Length | 4440 mm | 5070 mm |
| Vehicle Width | 1910 mm | 1900 mm |
| Vehicle Height | 1260 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2950 mm |
| Fuel Consumption Overall | 15.7 L/100km | 13.6 L/100km |
| Fuel Tank Capacity | 90 L | 90 L |
