2007 Audi S4 vs. 2005 Opel Astra
To start off, 2007 Audi S4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Opel Astra. In addition, the cost of maintenance, including insurance, on 2005 Opel Astra would be higher. At 4,163 cc (8 cylinders), 2007 Audi S4 is equipped with a bigger engine. In terms of performance, 2007 Audi S4 (340 HP @ 7000 RPM) has 210 more horse power than 2005 Opel Astra. (130 HP @ 4500 RPM). In normal driving conditions, 2007 Audi S4 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi S4 weights approximately 427 kg more than 2005 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Opel Astra. In wet, icy, snow, or gravel driving conditions, 2007 Audi S4 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, 2007 Audi S4 (410 Nm @ 3500 RPM) has 244 more torque (in Nm) than 2005 Opel Astra. (166 Nm @ 4400 RPM). This means 2007 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2007 Audi S4 | 2005 Opel Astra | |
| Make | Audi | Opel |
| Model | S4 | Astra |
| Year Released | 2007 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1796 cc |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 130 HP |
| Engine RPM | 7000 RPM | 4500 RPM |
| Torque | 410 Nm | 166 Nm |
| Torque RPM | 3500 RPM | 4400 RPM |
| Engine Bore Size | 84.5 mm | 80.5 mm |
| Engine Stroke Size | 93 mm | 88.2 mm |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1530 kg | 1103 kg |
| Wheelbase Size | 2660 mm | 2710 mm |
| Fuel Tank Capacity | 63 L | 52 L |
