2008 Opel Signum vs. 1991 Opel Astra
To start off, 2008 Opel Signum is newer by 17 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 1,910 cc (4 cylinders), 2008 Opel Signum is equipped with a bigger engine. In terms of performance, 2008 Opel Signum (149 HP @ 4000 RPM) has 49 more horse power than 1991 Opel Astra. (100 HP @ 5600 RPM). In normal driving conditions, 2008 Opel Signum should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2008 Opel Signum weights approximately 597 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.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2008 Opel Signum (315 Nm @ 2000 RPM) has 180 more torque (in Nm) than 1991 Opel Astra. (135 Nm @ 3400 RPM). This means 2008 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1991 Opel Astra.
Compare all specifications:
| 2008 Opel Signum | 1991 Opel Astra | |
| Make | Opel | Opel |
| Model | Signum | Astra |
| Year Released | 2008 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 1597 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 149 HP | 100 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 315 Nm | 135 Nm |
| Torque RPM | 2000 RPM | 3400 RPM |
| Engine Bore Size | 82 mm | 79 mm |
| Engine Stroke Size | 90.4 mm | 81.5 mm |
| Engine Compression Ratio | 18.0:1 | 9.8:1 |
| Top Speed | 209 km/hour | 190 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1613 kg | 1016 kg |
| Vehicle Length | 4640 mm | 4060 mm |
| Vehicle Width | 1800 mm | 1690 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2840 mm | 2530 mm |
| Fuel Tank Capacity | 60 L | 75 L |
