2009 Audi S4 vs. 2005 Opel Astra
To start off, 2009 Audi S4 is newer by 4 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), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 7000 RPM) has 243 more horse power than 2005 Opel Astra. (97 HP @ 6000 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Astra weights approximately 180 kg more than 2009 Audi S4.
Because 2009 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, 2009 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, 2009 Audi S4 (410 Nm @ 3500 RPM) has 268 more torque (in Nm) than 2005 Opel Astra. (142 Nm @ 3600 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2009 Audi S4 | 2005 Opel Astra | |
| Make | Audi | Opel |
| Model | S4 | Astra |
| Year Released | 2009 | 2005 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1598 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 97 HP |
| Engine RPM | 7000 RPM | 6000 RPM |
| Torque | 410 Nm | 142 Nm |
| Torque RPM | 3500 RPM | 3600 RPM |
| Engine Compression Ratio | 18.0:1 | 9.8:1 |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 930 kg | 1110 kg |
| Wheelbase Size | 2660 mm | 2700 mm |
| Fuel Consumption Overall | 15.7 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 63 L | 52 L |
