2007 Audi S4 vs. 1991 Opel Astra
To start off, 2007 Audi S4 is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Opel Astra. In addition, the cost of maintenance, including insurance, on 1991 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 (339 HP @ 7000 RPM) has 283 more horse power than 1991 Opel Astra. (56 HP @ 4600 RPM). In normal driving conditions, 2007 Audi S4 should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi S4 weights approximately 687 kg more than 1991 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 1991 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 305 more torque (in Nm) than 1991 Opel Astra. (105 Nm @ 2400 RPM). This means 2007 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Opel Astra.
Compare all specifications:
| 2007 Audi S4 | 1991 Opel Astra | |
| Make | Audi | Opel |
| Model | S4 | Astra |
| Year Released | 2007 | 1991 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1698 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 339 HP | 56 HP |
| Engine RPM | 7000 RPM | 4600 RPM |
| Torque | 410 Nm | 105 Nm |
| Torque RPM | 3500 RPM | 2400 RPM |
| Engine Bore Size | 84.5 mm | 82.5 mm |
| Engine Stroke Size | 92.8 mm | 79.5 mm |
| Engine Compression Ratio | 11.0:1 | 23.0:1 |
| Top Speed | 250 km/hour | 150 km/hour |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1722 kg | 1035 kg |
| Vehicle Length | 4590 mm | 4250 mm |
| Vehicle Width | 1730 mm | 1690 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2650 mm | 2530 mm |
| Fuel Tank Capacity | 63 L | 52 L |
