1999 Audi A4 vs. 2003 Opel Astra
To start off, 2003 Opel Astra is newer by 4 year(s). Which means there will be less support and parts availability for 1999 Audi A4. In addition, the cost of maintenance, including insurance, on 1999 Audi A4 would be higher. At 1,686 cc (4 cylinders), 2003 Opel Astra is equipped with a bigger engine. In terms of performance, 1999 Audi A4 (100 HP @ 5300 RPM) has 25 more horse power than 2003 Opel Astra. (75 HP @ 4300 RPM). In normal driving conditions, 1999 Audi A4 should accelerate faster than 2003 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Astra weights approximately 185 kg more than 1999 Audi A4.
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, 2003 Opel Astra (171 Nm @ 1800 RPM) has 31 more torque (in Nm) than 1999 Audi A4. (140 Nm @ 3800 RPM). This means 2003 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4.
Compare all specifications:
| 1999 Audi A4 | 2003 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 1999 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 1594 cc | 1686 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 100 HP | 75 HP |
| Engine RPM | 5300 RPM | 4300 RPM |
| Torque | 140 Nm | 171 Nm |
| Torque RPM | 3800 RPM | 1800 RPM |
| Engine Bore Size | 81 mm | 79 mm |
| Engine Stroke Size | 77.5 mm | 86 mm |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1195 kg | 1380 kg |
| Vehicle Length | 4480 mm | 4260 mm |
| Vehicle Width | 1740 mm | 1760 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2620 mm | 2670 mm |
| Fuel Tank Capacity | 62 L | 52 L |
