2007 Audi A8 vs. 2005 Porsche 911
To start off, 2007 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Porsche 911. In addition, the cost of maintenance, including insurance, on 2005 Porsche 911 would be higher. At 4,134 cc (8 cylinders), 2007 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (445 HP @ 6000 RPM) has 123 more horse power than 2007 Audi A8. (322 HP @ 3750 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 2007 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A8 weights approximately 355 kg more than 2005 Porsche 911.
Let's talk about torque, 2007 Audi A8 (650 Nm) has 30 more torque (in Nm) than 2005 Porsche 911. (620 Nm). This means 2007 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche 911.
Compare all specifications:
| 2007 Audi A8 | 2005 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A8 | 911 |
| Year Released | 2007 | 2005 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 4134 cc | 3605 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 322 HP | 445 HP |
| Engine RPM | 3750 RPM | 6000 RPM |
| Torque | 650 Nm | 620 Nm |
| Engine Compression Ratio | 16.5:1 | 9.4:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1945 kg | 1590 kg |
| Vehicle Length | 5070 mm | 4440 mm |
| Vehicle Width | 1900 mm | 1840 mm |
| Vehicle Height | 1450 mm | 1300 mm |
| Wheelbase Size | 2950 mm | 2360 mm |
| Fuel Consumption Overall | 9.4 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 90 L | 63 L |
