1999 Audi A4 vs. 2006 Opel Astra
To start off, 2006 Opel Astra is newer by 7 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 1,781 cc (4 cylinders), 1999 Audi A4 is equipped with a bigger engine. In terms of performance, 1999 Audi A4 (123 HP @ 5800 RPM) has 19 more horse power than 2006 Opel Astra. (104 HP @ 6000 RPM). In normal driving conditions, 1999 Audi A4 should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi A4 weights approximately 91 kg more than 2006 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1999 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2006 Opel Astra. In wet, icy, snow, or gravel driving conditions, 1999 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, 1999 Audi A4 (168 Nm @ 3500 RPM) has 18 more torque (in Nm) than 2006 Opel Astra. (150 Nm @ 3900 RPM). This means 1999 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Astra.
Compare all specifications:
| 1999 Audi A4 | 2006 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 1999 | 2006 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 1598 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 123 HP | 104 HP |
| Engine RPM | 5800 RPM | 6000 RPM |
| Torque | 168 Nm | 150 Nm |
| Torque RPM | 3500 RPM | 3900 RPM |
| Engine Bore Size | 81 mm | 79 mm |
| Engine Stroke Size | 86.4 mm | 81.5 mm |
| Engine Compression Ratio | 10.3:1 | 10.5:1 |
| Top Speed | 201 km/hour | 187 km/hour |
| Acceleration 0-100mph | 11 seconds | 12.2 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1356 kg | 1265 kg |
| Vehicle Length | 4480 mm | 4300 mm |
| Vehicle Width | 1740 mm | 1760 mm |
| Vehicle Height | 1420 mm | 1440 mm |
| Wheelbase Size | 2610 mm | 2620 mm |
| Fuel Tank Capacity | 60 L | 52 L |
