2003 Opel Astra vs. 2008 Audi A4
To start off, 2008 Audi A4 is newer by 5 year(s). Which means there will be less support and parts availability for 2003 Opel Astra. In addition, the cost of maintenance, including insurance, on 2003 Opel Astra would be higher. At 2,967 cc (6 cylinders), 2008 Audi A4 is equipped with a bigger engine. In terms of performance, 2008 Audi A4 (230 HP @ 4000 RPM) has 148 more horse power than 2003 Opel Astra. (82 HP @ 4400 RPM) In normal driving conditions, 2008 Audi A4 should accelerate faster than 2003 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A4 weights approximately 409 kg more than 2003 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2003 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 (450 Nm @ 1400 RPM) has 265 more torque (in Nm) than 2003 Opel Astra. (185 Nm @ 1500 RPM). This means 2008 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Astra.
Compare all specifications:
| 2003 Opel Astra | 2008 Audi A4 | |
| Make | Opel | Audi |
| Model | Astra | A4 |
| Year Released | 2003 | 2008 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1998 cc | 2967 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 82 HP | 230 HP |
| Engine RPM | 4400 RPM | 4000 RPM |
| Torque | 185 Nm | 450 Nm |
| Torque RPM | 1500 RPM | 1400 RPM |
| Engine Bore Size | 84 mm | 83 mm |
| Engine Stroke Size | 90 mm | 91.4 mm |
| Engine Compression Ratio | 18.5:1 | 17.0:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 170 km/hour | 242 km/hour |
| Acceleration 0-100mph | 15.5 seconds | 7.3 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1385 kg | 1794 kg |
| Vehicle Length | 4260 mm | 4580 mm |
| Vehicle Width | 1700 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2620 mm | 2660 mm |
| Fuel Tank Capacity | 52 L | 63 L |
