2004 Opel Signum vs. 2008 Opel Astra
To start off, 2008 Opel Astra is newer by 4 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 1,796 cc (4 cylinders), 2004 Opel Signum is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (125 HP @ 5600 RPM) has 36 more horse power than 2008 Opel Astra. (89 HP @ 4000 RPM). In normal driving conditions, 2004 Opel Signum should accelerate faster than 2008 Opel Astra.
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 Astra (200 Nm @ 1750 RPM) has 30 more torque (in Nm) than 2004 Opel Signum. (170 Nm @ 3800 RPM). This means 2008 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 | 2008 Opel Astra | |
| Make | Opel | Opel |
| Model | Signum | Astra |
| Year Released | 2004 | 2008 |
| Body Type | Hatchback | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 1248 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 125 HP | 89 HP |
| Engine RPM | 5600 RPM | 4000 RPM |
| Torque | 170 Nm | 200 Nm |
| Torque RPM | 3800 RPM | 1750 RPM |
| Engine Bore Size | 80.5 mm | 69.6 mm |
| Engine Stroke Size | 88.2 mm | 82 mm |
| Engine Compression Ratio | 10.5:1 | 18.0:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 197 km/hour | 172 km/hour |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1380 kg | 1380 kg |
| Vehicle Length | 4640 mm | 4520 mm |
| Vehicle Width | 1800 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1510 mm |
| Wheelbase Size | 2700 mm | 2710 mm |
| Fuel Consumption Overall | 7.5 L/100km | 4.8 L/100km |
| Fuel Tank Capacity | 58 L | 52 L |
