2009 Audi A8 vs. 2007 Porsche 911
To start off, 2009 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Porsche 911. In addition, the cost of maintenance, including insurance, on 2007 Porsche 911 would be higher. At 3,600 cc (6 cylinders), 2007 Porsche 911 is equipped with a bigger engine. In terms of performance, 2007 Porsche 911 (473 HP) has 217 more horse power than 2009 Audi A8. (256 HP) In normal driving conditions, 2007 Porsche 911 should accelerate faster than 2009 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2007 Porsche 911 weights approximately 430 kg more than 2009 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - 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 Porsche 911 (620 Nm @ 1950 RPM) has 290 more torque (in Nm) than 2009 Audi A8. (330 Nm @ 3250 RPM). This means 2007 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A8.
Compare all specifications:
| 2009 Audi A8 | 2007 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A8 | 911 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 3123 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 256 HP | 473 HP |
| Torque | 330 Nm | 620 Nm |
| Torque RPM | 3250 RPM | 1950 RPM |
| Engine Compression Ratio | 13.0:1 | 10.1:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 245 km/hour | 310 km/hour |
| Acceleration 0-100mph | 7.7 seconds | 3.9 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1160 kg | 1590 kg |
| Vehicle Length | 5060 mm | 4440 mm |
| Vehicle Width | 1900 mm | 1860 mm |
| Vehicle Height | 1450 mm | 1310 mm |
| Wheelbase Size | 2950 mm | 2360 mm |
| Fuel Consumption Overall | 11 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 90 L | 80 L |
