2008 Audi A4 vs. 1991 Opel Astra
To start off, 2008 Audi A4 is newer by 17 year(s). Which means there will be less support and parts availability for 1991 Opel Astra. In addition, the cost of maintenance, including insurance, on 1991 Opel Astra would be higher. At 2,496 cc (6 cylinders), 2008 Audi A4 is equipped with a bigger engine. In terms of performance, 2008 Audi A4 (161 HP @ 4000 RPM) has 79 more horse power than 1991 Opel Astra. (82 HP @ 5800 RPM). In normal driving conditions, 2008 Audi A4 should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A4 weights approximately 620 kg more than 1991 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2008 Audi A4 (350 Nm @ 1500 RPM) has 237 more torque (in Nm) than 1991 Opel Astra. (113 Nm @ 3400 RPM). This means 2008 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Opel Astra.
Compare all specifications:
| 2008 Audi A4 | 1991 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2008 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 1388 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 161 HP | 82 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 350 Nm | 113 Nm |
| Torque RPM | 1500 RPM | 3400 RPM |
| Engine Bore Size | 78.3 mm | 77.6 mm |
| Engine Stroke Size | 86.4 mm | 73.4 mm |
| Engine Compression Ratio | 18.0:1 | 9.4:1 |
| Top Speed | 225 km/hour | 171 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1560 kg | 940 kg |
| Vehicle Length | 4550 mm | 4060 mm |
| Vehicle Width | 1780 mm | 1690 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2610 mm |
