2005 Audi A4 vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 2 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 1,998 cc (4 cylinders), 2007 Opel Astra is equipped with a bigger engine. In terms of performance, 2007 Opel Astra (197 HP @ 5400 RPM) has 27 more horse power than 2005 Audi A4. (170 HP @ 6500 RPM) In normal driving conditions, 2007 Opel Astra should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 271 kg more than 2007 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, 2007 Opel Astra (262 Nm) has 32 more torque (in Nm) than 2005 Audi A4. (230 Nm). This means 2007 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 | 2007 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2005 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1786 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 170 HP | 197 HP |
| Engine RPM | 6500 RPM | 5400 RPM |
| Torque | 230 Nm | 262 Nm |
| Engine Bore Size | 81 mm | 86.1 mm |
| Engine Stroke Size | 86 mm | 86 mm |
| Engine Compression Ratio | 9.3:1 | 8.8:1 |
| Drive Type | Front | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1656 kg | 1385 kg |
| Vehicle Length | 4580 mm | 4300 mm |
| Vehicle Width | 1780 mm | 1760 mm |
| Vehicle Height | 1400 mm | 1440 mm |
| Wheelbase Size | 2770 mm | 2620 mm |
| Fuel Consumption Overall | 9.1 L/100km | 9.3 L/100km |
| Fuel Tank Capacity | 70 L | 52 L |
