2005 Audi A8 vs. 2007 Porsche 911
To start off, 2007 Porsche 911 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi A8. In addition, the cost of maintenance, including insurance, on 2005 Audi A8 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 (409 HP @ 7600 RPM) has 179 more horse power than 2005 Audi A8. (230 HP @ 4000 RPM) In normal driving conditions, 2007 Porsche 911 should accelerate faster than 2005 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 444 kg more than 2007 Porsche 911.
Because 2005 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2007 Porsche 911. In wet, icy, snow, or gravel driving conditions, 2005 Audi A8 will offer significantly more control. 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, 2005 Audi A8 (450 Nm @ 1400 RPM) has 45 more torque (in Nm) than 2007 Porsche 911. (405 Nm @ 5500 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Porsche 911. 2005 Audi A8 has automatic transmission and 2007 Porsche 911 has manual transmission. 2007 Porsche 911 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi A8 | 2007 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A8 | 911 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 2966 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 230 HP | 409 HP |
| Engine RPM | 4000 RPM | 7600 RPM |
| Torque | 450 Nm | 405 Nm |
| Torque RPM | 1400 RPM | 5500 RPM |
| Engine Bore Size | 83 mm | 100 mm |
| Engine Stroke Size | 91.4 mm | 76.4 mm |
| Engine Compression Ratio | 17.0:1 | 11.7:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 243 km/hour | 306 km/hour |
| Acceleration 0-100mph | 7.8 seconds | 4.5 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1830 kg | 1386 kg |
| Vehicle Length | 5060 mm | 4440 mm |
| Vehicle Width | 1900 mm | 1780 mm |
| Vehicle Height | 1450 mm | 1280 mm |
| Wheelbase Size | 2950 mm | 2360 mm |
| Fuel Consumption Overall | 8.4 L/100km | 12.9 L/100km |
| Fuel Tank Capacity | 90 L | 89 L |
