2009 Audi S8 vs. 2008 Porsche Cayenne
To start off, 2009 Audi S8 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Porsche Cayenne. In addition, the cost of maintenance, including insurance, on 2008 Porsche Cayenne would be higher. At 5,204 cc (10 cylinders), 2009 Audi S8 is equipped with a bigger engine. In terms of performance, 2009 Audi S8 (450 HP @ 7000 RPM) has 45 more horse power than 2008 Porsche Cayenne. (405 HP @ 6500 RPM). In normal driving conditions, 2009 Audi S8 should accelerate faster than 2008 Porsche Cayenne. With that said, vehicle weight also plays an important factor in acceleration. 2008 Porsche Cayenne weights approximately 1050 kg more than 2009 Audi S8.
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, 2008 Porsche Cayenne (678 Nm @ 3500 RPM) has 138 more torque (in Nm) than 2009 Audi S8. (540 Nm @ 3500 RPM). This means 2008 Porsche Cayenne will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi S8. 2009 Audi S8 has automatic transmission and 2008 Porsche Cayenne has manual transmission. 2008 Porsche Cayenne will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi S8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi S8 | 2008 Porsche Cayenne | |
| Make | Audi | Porsche |
| Model | S8 | Cayenne |
| Year Released | 2009 | 2008 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 4800 cc |
| Engine Cylinders | 10 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 450 HP | 405 HP |
| Engine RPM | 7000 RPM | 6500 RPM |
| Torque | 540 Nm | 678 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Compression Ratio | 12.5:1 | 12.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Acceleration 0-100mph | 5.1 seconds | 6.4 seconds |
| Drive Type | AWD | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1175 kg | 2225 kg |
| Vehicle Length | 5070 mm | 4790 mm |
| Vehicle Width | 1900 mm | 1930 mm |
| Vehicle Height | 1430 mm | 1710 mm |
| Wheelbase Size | 2950 mm | 2860 mm |
| Fuel Consumption Overall | 15.8 L/100km | 11.5 L/100km |
| Fuel Tank Capacity | 90 L | 100 L |
