2005 Audi S4 vs. 1998 Opel Astra
To start off, 2005 Audi S4 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 4,161 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 251 more horse power than 1998 Opel Astra. (89 HP @ 6000 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 1998 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 650 kg more than 1998 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 283 more torque (in Nm) than 1998 Opel Astra. (127 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1998 Opel Astra.
Compare all specifications:
| 2005 Audi S4 | 1998 Opel Astra | |
| Make | Audi | Opel |
| Model | S4 | Astra |
| Year Released | 2005 | 1998 |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 1389 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 89 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 410 Nm | 127 Nm |
| Engine Bore Size | 85 mm | 77.6 mm |
| Engine Stroke Size | 93 mm | 73.4 mm |
| Vehicle Weight | 1840 kg | 1190 kg |
| Vehicle Length | 4580 mm | 4300 mm |
| Vehicle Width | 1780 mm | 1720 mm |
| Vehicle Height | 1400 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2620 mm |
