2004 Opel Signum vs. 2005 Opel Astra
To start off, 2005 Opel Astra is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Opel Signum. In addition, the cost of maintenance, including insurance, on 2004 Opel Signum would be higher. At 1,995 cc (4 cylinders), 2005 Opel Astra is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (125 HP @ 5600 RPM) has 25 more horse power than 2005 Opel Astra. (100 HP @ 4300 RPM). In normal driving conditions, 2004 Opel Signum should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Astra weights approximately 5 kg more than 2004 Opel Signum.
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, 2005 Opel Astra (230 Nm @ 1950 RPM) has 60 more torque (in Nm) than 2004 Opel Signum. (170 Nm @ 3800 RPM). This means 2005 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum.
Compare all specifications:
| 2004 Opel Signum | 2005 Opel Astra | |
| Make | Opel | Opel |
| Model | Signum | Astra |
| Year Released | 2004 | 2005 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 1995 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 125 HP | 100 HP |
| Engine RPM | 5600 RPM | 4300 RPM |
| Torque | 170 Nm | 230 Nm |
| Torque RPM | 3800 RPM | 1950 RPM |
| Engine Compression Ratio | 10.5:1 | 18.5:1 |
| Top Speed | 197 km/hour | 183 km/hour |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1380 kg | 1385 kg |
| Vehicle Length | 4640 mm | 4260 mm |
| Vehicle Width | 1800 mm | 1720 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2700 mm | 2610 mm |
| Fuel Tank Capacity | 58 L | 52 L |
