1991 Opel Astra vs. 2008 Opel Signum
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 518 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:
| 1991 Opel Astra | 2008 Opel Signum | |
| Make | Opel | Opel |
| Model | Astra | Signum |
| Year Released | 1991 | 2008 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1597 cc | 1910 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 100 HP | 149 HP |
| Engine RPM | 5600 RPM | 4000 RPM |
| Torque | 135 Nm | 315 Nm |
| Torque RPM | 3400 RPM | 2000 RPM |
| Engine Bore Size | 79 mm | 82 mm |
| Engine Stroke Size | 81.5 mm | 90.4 mm |
| Engine Compression Ratio | 9.8:1 | 18.0:1 |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1095 kg | 1613 kg |
| Vehicle Length | 4280 mm | 4640 mm |
| Vehicle Width | 1690 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2640 mm | 2840 mm |
| Fuel Tank Capacity | 52 L | 60 L |
