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 2,495 cc (6 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (161 HP @ 4000 RPM) has 13 more horse power than 2006 Opel Astra. (148 HP @ 4000 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2006 Opel Astra.
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 (350 Nm @ 1500 RPM) has 30 more torque (in Nm) than 2006 Opel Astra. (320 Nm @ 2000 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 | 2495 cc | 1910 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 161 HP | 148 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 350 Nm | 320 Nm |
| Torque RPM | 1500 RPM | 2000 RPM |
| Engine Bore Size | 78.3 mm | 83 mm |
| Engine Stroke Size | 86.4 mm | 92 mm |
| Engine Compression Ratio | 18.0:1 | 17.5:1 |
| Fuel Type | Diesel | Diesel |
| Drive Type | Front | Front |
| Number of Seats | 4 seats | 4 seats |
| Vehicle Width | 1780 mm | 1760 mm |
