2005 Audi S4 vs. 2005 Opel Astra
To start off, both 2005 Audi S4 and 2005 Opel Astra were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,161 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 6300 RPM) has 143 more horse power than 2005 Opel Astra. (197 HP @ 5400 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi S4 weights approximately 585 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.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 148 more torque (in Nm) than 2005 Opel Astra. (262 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2005 Audi S4 | 2005 Opel Astra | |
| Make | Audi | Opel |
| Model | S4 | Astra |
| Year Released | 2005 | 2005 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 1910 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 197 HP |
| Engine RPM | 6300 RPM | 5400 RPM |
| Torque | 410 Nm | 262 Nm |
| Engine Bore Size | 85 mm | 86.1 mm |
| Engine Stroke Size | 93 mm | 86 mm |
| Engine Compression Ratio | 11.0:1 | 8.8:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1840 kg | 1255 kg |
| Vehicle Length | 4580 mm | 4300 mm |
| Vehicle Width | 1780 mm | 1760 mm |
| Vehicle Height | 1400 mm | 1440 mm |
| Wheelbase Size | 2660 mm | 2640 mm |
| Fuel Consumption Highway | 10.2 L/100km | 6.8 L/100km |
| Fuel Consumption City | 13.8 L/100km | 12.8 L/100km |
| Fuel Consumption Overall | 11.8 L/100km | 9 L/100km |
| Fuel Tank Capacity | 63 L | 52 L |
