2003 Audi A8 vs. 2005 Porsche Cayenne
To start off, 2005 Porsche Cayenne is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Audi A8. In addition, the cost of maintenance, including insurance, on 2003 Audi A8 would be higher. At 4,507 cc (8 cylinders), 2005 Porsche Cayenne is equipped with a bigger engine. In terms of performance, 2005 Porsche Cayenne (451 HP @ 6000 RPM) has 175 more horse power than 2003 Audi A8. (276 HP @ 3750 RPM) In normal driving conditions, 2005 Porsche Cayenne should accelerate faster than 2003 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche Cayenne weights approximately 550 kg more than 2003 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, 2003 Audi A8 (650 Nm @ 1800 RPM) has 26 more torque (in Nm) than 2005 Porsche Cayenne. (624 Nm @ 2250 RPM). This means 2003 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche Cayenne.
Compare all specifications:
| 2003 Audi A8 | 2005 Porsche Cayenne | |
| Make | Audi | Porsche |
| Model | A8 | Cayenne |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 3936 cc | 4507 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 276 HP | 451 HP |
| Engine RPM | 3750 RPM | 6000 RPM |
| Torque | 650 Nm | 624 Nm |
| Torque RPM | 1800 RPM | 2250 RPM |
| Engine Bore Size | 81.1 mm | 93 mm |
| Engine Stroke Size | 95.5 mm | 83 mm |
| Engine Compression Ratio | 10.5:1 | 9.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1880 kg | 2430 kg |
| Vehicle Length | 5060 mm | 4790 mm |
| Vehicle Width | 1900 mm | 1930 mm |
| Vehicle Height | 1450 mm | 1710 mm |
| Wheelbase Size | 2770 mm | 2860 mm |
| Fuel Consumption | 7.5 L/100km | 13.1 L/100km |
| Fuel Consumption City | 13.4 L/100km | 18.1 L/100km |
| Fuel Consumption Overall | 9.6 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 90 L | 100 L |
