2009 Audi A4 vs. 2006 Opel Astra
To start off, 2009 Audi A4 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Opel Astra. In addition, the cost of maintenance, including insurance, on 2006 Opel Astra would be higher. At 1,998 cc (4 cylinders), 2006 Opel Astra is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (217 HP @ 5900 RPM) has 49 more horse power than 2006 Opel Astra. (168 HP @ 5200 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 70 kg more than 2006 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2009 Audi A4 (300 Nm @ 2200 RPM) has 50 more torque (in Nm) than 2006 Opel Astra. (250 Nm @ 1950 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Astra.
Compare all specifications:
| 2009 Audi A4 | 2006 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2009 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1983 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 217 HP | 168 HP |
| Engine RPM | 5900 RPM | 5200 RPM |
| Torque | 300 Nm | 250 Nm |
| Torque RPM | 2200 RPM | 1950 RPM |
| Engine Bore Size | 82.5 mm | 86 mm |
| Engine Stroke Size | 92.8 mm | 86 mm |
| Engine Compression Ratio | 10.5:1 | 8.8:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 247 km/hour | 217 km/hour |
| Acceleration 0-100mph | 7.1 seconds | 8.7 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 | 1455 kg | 1385 kg |
| Vehicle Length | 4610 mm | 4260 mm |
| Vehicle Width | 1780 mm | 1760 mm |
| Vehicle Height | 1400 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2620 mm |
| Fuel Consumption Overall | 8.1 L/100km | 9.2 L/100km |
| Fuel Tank Capacity | 70 L | 52 L |
