2005 Audi A8 vs. 2005 Opel Astra
To start off, both 2005 Audi A8 and 2005 Opel Astra 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 205 more horse power than 2005 Opel Astra. (130 HP @ 4500 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 842 kg more than 2005 Opel Astra. 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 264 more torque (in Nm) than 2005 Opel Astra. (166 Nm). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2005 Audi A8 | 2005 Opel Astra | |
| Make | Audi | Opel |
| Model | A8 | Astra |
| Year Released | 2005 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 4178 cc | 1796 cc |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 335 HP | 130 HP |
| Engine RPM | 4000 RPM | 4500 RPM |
| Torque | 430 Nm | 166 Nm |
| Engine Bore Size | 85 mm | 80.5 mm |
| Engine Stroke Size | 93 mm | 88.2 mm |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1945 kg | 1103 kg |
| Wheelbase Size | 2950 mm | 2710 mm |
| Fuel Tank Capacity | 90 L | 52 L |
