2005 Audi A4 vs. 1998 Opel Astra
To start off, 2005 Audi A4 is newer by 7 year(s). Which means there will be less support and parts availability for 1998 Opel Astra. In addition, the cost of maintenance, including insurance, on 1998 Opel Astra would be higher. At 1,995 cc (4 cylinders), 1998 Opel Astra is equipped with a bigger engine. In terms of performance, 2005 Audi A4 (138 HP @ 4000 RPM) has 53 more horse power than 1998 Opel Astra. (85 HP @ 4400 RPM). In normal driving conditions, 2005 Audi A4 should accelerate faster than 1998 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 (320 Nm @ 1750 RPM) has 132 more torque (in Nm) than 1998 Opel Astra. (188 Nm @ 1800 RPM). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1998 Opel Astra.
Compare all specifications:
| 2005 Audi A4 | 1998 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2005 | 1998 |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 1995 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 85 HP |
| Engine RPM | 4000 RPM | 4400 RPM |
| Torque | 320 Nm | 188 Nm |
| Torque RPM | 1750 RPM | 1800 RPM |
| Engine Bore Size | 81 mm | 84 mm |
| Engine Stroke Size | 95.5 mm | 90 mm |
| Engine Compression Ratio | 18.0:1 | 18.5:1 |
| Fuel Type | Diesel | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Length | 4550 mm | 4060 mm |
| Vehicle Width | 1780 mm | 1710 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2620 mm |
| Fuel Tank Capacity | 66 L | 44 L |
