2008 Audi A4 vs. 2009 Opel Astra
To start off, 2009 Opel Astra is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi A4. In addition, the cost of maintenance, including insurance, on 2008 Audi A4 would be higher. At 2,495 cc (6 cylinders), 2008 Audi A4 is equipped with a bigger engine. In terms of performance, 2008 Audi A4 (178 HP @ 4000 RPM) has 39 more horse power than 2009 Opel Astra. (139 HP @ 5600 RPM). In normal driving conditions, 2008 Audi A4 should accelerate faster than 2009 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2009 Opel Astra weights approximately 35 kg more than 2008 Audi A4.
Because 2008 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Opel Astra. In wet, icy, snow, or gravel driving conditions, 2008 Audi A4 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, 2008 Audi A4 (370 Nm @ 1500 RPM) has 195 more torque (in Nm) than 2009 Opel Astra. (175 Nm @ 3800 RPM). This means 2008 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Opel Astra.
Compare all specifications:
| 2008 Audi A4 | 2009 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2008 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 2495 cc | 1796 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 178 HP | 139 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 370 Nm | 175 Nm |
| Torque RPM | 1500 RPM | 3800 RPM |
| Engine Bore Size | 78.3 mm | 80.5 mm |
| Engine Stroke Size | 86.4 mm | 88.2 mm |
| Engine Compression Ratio | 19.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 223 km/hour | 208 km/hour |
| Acceleration 0-100mph | 8.6 seconds | 10.2 seconds |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1590 kg | 1625 kg |
| Vehicle Length | 4550 mm | 4260 mm |
| Vehicle Width | 1780 mm | 1760 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2620 mm |
| Fuel Consumption Overall | 7.6 L/100km | 6.2 L/100km |
| Fuel Tank Capacity | 66 L | 52 L |
