2004 Opel Signum vs. 2006 Opel Astra
To start off, 2006 Opel Astra is newer by 2 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 1,908 cc (4 cylinders), 2004 Opel Signum is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (148 HP @ 4000 RPM) has 59 more horse power than 2006 Opel Astra. (89 HP @ 5600 RPM). In normal driving conditions, 2004 Opel Signum should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 380 kg more than 2006 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, 2004 Opel Signum (326 Nm @ 2000 RPM) has 201 more torque (in Nm) than 2006 Opel Astra. (125 Nm @ 4000 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Astra.
Compare all specifications:
| 2004 Opel Signum | 2006 Opel Astra | |
| Make | Opel | Opel |
| Model | Signum | Astra |
| Year Released | 2004 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1908 cc | 1364 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 89 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 326 Nm | 125 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Compression Ratio | 18.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 209 km/hour | 173 km/hour |
| Acceleration 0-100mph | 10.5 seconds | 13.7 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1610 kg | 1230 kg |
| Vehicle Length | 4640 mm | 4260 mm |
| Vehicle Width | 1800 mm | 1760 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2840 mm | 2620 mm |
| Fuel Consumption Overall | 6.1 L/100km | 6.3 L/100km |
| Fuel Tank Capacity | 60 L | 52 L |
