2005 Audi S4 vs. 2008 Opel Astra
To start off, 2008 Opel Astra is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Audi S4. In addition, the cost of maintenance, including insurance, on 2005 Audi S4 would be higher. At 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 271 more horse power than 2008 Opel Astra. (69 HP @ 5600 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 2008 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 425 kg more than 2008 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 240 more torque (in Nm) than 2008 Opel Astra. (170 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2008 Opel Astra.
Compare all specifications:
| 2005 Audi S4 | 2008 Opel Astra | |
| Make | Audi | Opel |
| Model | S4 | Astra |
| Year Released | 2005 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1796 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 69 HP |
| Engine RPM | 6300 RPM | 5600 RPM |
| Torque | 410 Nm | 170 Nm |
| Engine Bore Size | 85.1 mm | 80.5 mm |
| Engine Stroke Size | 93 mm | 88.2 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1735 kg | 1310 kg |
| Vehicle Length | 4550 mm | 3510 mm |
| Vehicle Height | 1430 mm | 1700 mm |
| Wheelbase Size | 2660 mm | 2620 mm |
| Fuel Consumption Overall | 13.8 L/100km | 8.4 L/100km |
| Fuel Tank Capacity | 63 L | 52 L |
