2005 Audi S4 vs. 2011 Opel Astra
To start off, 2011 Opel Astra is newer by 6 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 @ 4000 RPM) has 202 more horse power than 2011 Opel Astra. (138 HP @ 5600 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 2011 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 492 kg more than 2011 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 235 more torque (in Nm) than 2011 Opel Astra. (175 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2011 Opel Astra.
Compare all specifications:
| 2005 Audi S4 | 2011 Opel Astra | |
| Make | Audi | Opel |
| Model | S4 | Astra |
| Year Released | 2005 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1795 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 138 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 410 Nm | 175 Nm |
| Engine Bore Size | 85 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 | 1770 kg | 1278 kg |
| Vehicle Length | 4550 mm | 4260 mm |
| Vehicle Width | 1770 mm | 1760 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2770 mm | 2620 mm |
| Fuel Consumption Overall | 11.8 L/100km | 7.3 L/100km |
| Fuel Tank Capacity | 66 L | 52 L |
