2005 Audi A8 vs. 2005 Porsche 911
To start off, both 2005 Audi A8 and 2005 Porsche 911 were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,178 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (335 HP @ 4000 RPM) has 20 more horse power than 2005 Porsche 911. (315 HP @ 6800 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2005 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 380 kg more than 2005 Porsche 911. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi A8 (430 Nm) has 60 more torque (in Nm) than 2005 Porsche 911. (370 Nm). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche 911.
Compare all specifications:
| 2005 Audi A8 | 2005 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A8 | 911 |
| Year Released | 2005 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 4178 cc | 3596 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 335 HP | 315 HP |
| Engine RPM | 4000 RPM | 6800 RPM |
| Torque | 430 Nm | 370 Nm |
| Engine Bore Size | 85 mm | 96 mm |
| Engine Stroke Size | 93 mm | 82.8 mm |
| Engine Compression Ratio | 11.0:1 | 11.3:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1945 kg | 1565 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 | 11.8 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 90 L | 64 L |
