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 2,496 cc (6 cylinders), 2005 Audi A4 is equipped with a bigger engine. In terms of performance, 2008 Opel Astra (197 HP @ 5400 RPM) has 35 more horse power than 2005 Audi A4. (162 HP @ 4000 RPM) In normal driving conditions, 2008 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 335 kg more than 2008 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, 2005 Audi A4 (350 Nm @ 1500 RPM) has 88 more torque (in Nm) than 2008 Opel Astra. (262 Nm @ 4200 RPM). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2008 Opel Astra.
Compare all specifications:
| 2005 Audi A4 | 2008 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2005 | 2008 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 162 HP | 197 HP |
| Engine RPM | 4000 RPM | 5400 RPM |
| Torque | 350 Nm | 262 Nm |
| Torque RPM | 1500 RPM | 4200 RPM |
| Engine Bore Size | 78.3 mm | 86 mm |
| Engine Stroke Size | 86.4 mm | 86 mm |
| Engine Compression Ratio | 18.0:1 | 8.8:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 225 km/hour | 234 km/hour |
| Acceleration 0-100mph | 9.7 seconds | 7.8 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1720 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 | 7.3 L/100km | 9.5 L/100km |
| Fuel Tank Capacity | 70 L | 52 L |
