2008 Audi A8 vs. 2004 Porsche 911
To start off, 2008 Audi A8 is newer by 4 year(s). Which means there will be less support and parts availability for 2004 Porsche 911. In addition, the cost of maintenance, including insurance, on 2004 Porsche 911 would be higher. At 3,934 cc (8 cylinders), 2008 Audi A8 is equipped with a bigger engine. In terms of performance, 2004 Porsche 911 (415 HP @ 6000 RPM) has 144 more horse power than 2008 Audi A8. (271 HP @ 3750 RPM) In normal driving conditions, 2004 Porsche 911 should accelerate faster than 2008 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A8 weights approximately 403 kg more than 2004 Porsche 911.
Because 2008 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2004 Porsche 911. In wet, icy, snow, or gravel driving conditions, 2008 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, 2008 Audi A8 (650 Nm) has 87 more torque (in Nm) than 2004 Porsche 911. (563 Nm). This means 2008 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2004 Porsche 911.
Compare all specifications:
| 2008 Audi A8 | 2004 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A8 | 911 |
| Year Released | 2008 | 2004 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 3934 cc | 3588 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 271 HP | 415 HP |
| Engine RPM | 3750 RPM | 6000 RPM |
| Torque | 650 Nm | 563 Nm |
| Engine Bore Size | 81 mm | 100 mm |
| Engine Stroke Size | 95.5 mm | 76 mm |
| Engine Compression Ratio | 18.0:1 | 9.4:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1940 kg | 1537 kg |
| Vehicle Length | 5060 mm | 4440 mm |
| Vehicle Width | 1900 mm | 1840 mm |
| Vehicle Height | 1450 mm | 1300 mm |
| Wheelbase Size | 2950 mm | 2360 mm |
| Fuel Consumption Overall | 9.7 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 90 L | 64 L |
