2005 Audi A4 vs. 2008 Opel Astra
To start off, 2008 Opel Astra is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Audi A4. In addition, the cost of maintenance, including insurance, on 2005 Audi A4 would be higher. At 1,909 cc (4 cylinders), 2008 Opel Astra is equipped with a bigger engine. In terms of performance, 2005 Audi A4 (148 HP @ 5700 RPM) has 49 more horse power than 2008 Opel Astra. (99 HP @ 3500 RPM). In normal driving conditions, 2005 Audi A4 should accelerate faster than 2008 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2008 Opel Astra weights approximately 60 kg more than 2005 Audi A4.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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, 2008 Opel Astra (260 Nm @ 1700 RPM) has 50 more torque (in Nm) than 2005 Audi A4. (210 Nm @ 1750 RPM). This means 2008 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
Compare all specifications:
| 2005 Audi A4 | 2008 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2005 | 2008 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 1909 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 148 HP | 99 HP |
| Engine RPM | 5700 RPM | 3500 RPM |
| Torque | 210 Nm | 260 Nm |
| Torque RPM | 1750 RPM | 1700 RPM |
| Engine Bore Size | 81.1 mm | 82 mm |
| Engine Stroke Size | 86.4 mm | 90.4 mm |
| Engine Compression Ratio | 9.3:1 | 18.0:1 |
| Acceleration 0-100mph | 9.1 seconds | 12.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1375 kg | 1435 kg |
| Vehicle Length | 4550 mm | 4520 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1510 mm |
| Wheelbase Size | 2660 mm | 2710 mm |
| Fuel Consumption Overall | 8.2 L/100km | 6.1 L/100km |
| Fuel Tank Capacity | 70 L | 52 L |
