2007 Audi S4 vs. 2009 Opel Astra
To start off, 2009 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi S4. In addition, the cost of maintenance, including insurance, on 2007 Audi S4 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 (339 HP @ 7000 RPM) has 142 more horse power than 2009 Opel Astra. (197 HP @ 5400 RPM). In normal driving conditions, 2007 Audi S4 should accelerate faster than 2009 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi S4 weights approximately 409 kg more than 2009 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 2009 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 148 more torque (in Nm) than 2009 Opel Astra. (262 Nm @ 4200 RPM). This means 2007 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Opel Astra.
Compare all specifications:
| 2007 Audi S4 | 2009 Opel Astra | |
| Make | Audi | Opel |
| Model | S4 | Astra |
| Year Released | 2007 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1998 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 339 HP | 197 HP |
| Engine RPM | 7000 RPM | 5400 RPM |
| Torque | 410 Nm | 262 Nm |
| Torque RPM | 3500 RPM | 4200 RPM |
| Engine Compression Ratio | 11.0:1 | 8.8:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 5.8 seconds | 8.2 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1795 kg | 1386 kg |
| Vehicle Length | 4580 mm | 4480 mm |
| Vehicle Width | 1790 mm | 2030 mm |
| Vehicle Height | 1450 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2620 mm |
| Fuel Consumption Overall | 13.4 L/100km | 7.7 L/100km |
| Fuel Tank Capacity | 66 L | 52 L |
