2003 Audi A8 vs. 2005 Opel Astra
To start off, 2005 Opel Astra 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 3,936 cc (8 cylinders), 2003 Audi A8 is equipped with a bigger engine. In terms of performance, 2003 Audi A8 (272 HP @ 3750 RPM) has 142 more horse power than 2005 Opel Astra. (130 HP @ 4500 RPM). In normal driving conditions, 2003 Audi A8 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi A8 weights approximately 717 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.
Because 2003 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Opel Astra. In wet, icy, snow, or gravel driving conditions, 2003 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, 2003 Audi A8 (650 Nm @ 1800 RPM) has 484 more torque (in Nm) than 2005 Opel Astra. (166 Nm @ 4400 RPM). This means 2003 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra. 2003 Audi A8 has automatic transmission and 2005 Opel Astra has manual transmission. 2005 Opel Astra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Audi A8 | 2005 Opel Astra | |
| Make | Audi | Opel |
| Model | A8 | Astra |
| Year Released | 2003 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 3936 cc | 1796 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 272 HP | 130 HP |
| Engine RPM | 3750 RPM | 4500 RPM |
| Torque | 650 Nm | 166 Nm |
| Torque RPM | 1800 RPM | 4400 RPM |
| Engine Bore Size | 81 mm | 80.5 mm |
| Engine Stroke Size | 95.5 mm | 88.2 mm |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1820 kg | 1103 kg |
| Wheelbase Size | 3080 mm | 2710 mm |
| Fuel Tank Capacity | 90 L | 52 L |
