2008 Audi S8 vs. 2009 Porsche 911
To start off, 2009 Porsche 911 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi S8. In addition, the cost of maintenance, including insurance, on 2008 Audi S8 would be higher. At 5,204 cc (10 cylinders), 2008 Audi S8 is equipped with a bigger engine. In terms of performance, 2009 Porsche 911 (473 HP @ 6000 RPM) has 23 more horse power than 2008 Audi S8. (450 HP @ 7000 RPM) In normal driving conditions, 2009 Porsche 911 should accelerate faster than 2008 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 2009 Porsche 911 weights approximately 249 kg more than 2008 Audi S8. 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, 2009 Porsche 911 (620 Nm @ 1950 RPM) has 80 more torque (in Nm) than 2008 Audi S8. (540 Nm @ 3500 RPM). This means 2009 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi S8.
Compare all specifications:
| 2008 Audi S8 | 2009 Porsche 911 | |
| Make | Audi | Porsche |
| Model | S8 | 911 |
| Year Released | 2008 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 5204 cc | 3600 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 473 HP |
| Engine RPM | 7000 RPM | 6000 RPM |
| Torque | 540 Nm | 620 Nm |
| Torque RPM | 3500 RPM | 1950 RPM |
| Engine Compression Ratio | 12.5:1 | 9.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 249 km/hour | 305 km/hour |
| Drive Type | AWD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1176 kg | 1425 kg |
| Vehicle Length | 5070 mm | 4460 mm |
| Vehicle Width | 1900 mm | 1310 mm |
| Vehicle Height | 1430 mm | 1860 mm |
| Wheelbase Size | 2950 mm | 2360 mm |
| Fuel Consumption Overall | 15.7 L/100km | 13.7 L/100km |
| Fuel Tank Capacity | 90 L | 67 L |
