2006 Opel Astra vs. 2004 Opel Signum
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 1,910 cc (4 cylinders), 2006 Opel Astra is equipped with a bigger engine. In terms of performance, 2006 Opel Astra (149 HP @ 4000 RPM) has 1 more horse power than 2004 Opel Signum. (148 HP @ 4000 RPM). In normal driving conditions, 2006 Opel Astra should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 95 kg more than 2006 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, 2004 Opel Signum (326 Nm @ 2000 RPM) has 6 more torque (in Nm) than 2006 Opel Astra. (320 Nm @ 2000 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:
| 2006 Opel Astra | 2004 Opel Signum | |
| Make | Opel | Opel |
| Model | Astra | Signum |
| Year Released | 2006 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 1908 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 149 HP | 148 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 320 Nm | 326 Nm |
| Torque RPM | 2000 RPM | 2000 RPM |
| Engine Bore Size | 82 mm | 82 mm |
| Engine Stroke Size | 90.4 mm | 90.4 mm |
| Engine Compression Ratio | 17.5:1 | 18.0:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 213 km/hour | 209 km/hour |
| Acceleration 0-100mph | 10.2 seconds | 10.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1515 kg | 1610 kg |
| Vehicle Length | 4480 mm | 4640 mm |
| Vehicle Width | 2030 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2620 mm | 2840 mm |
| Fuel Consumption Overall | 6.1 L/100km | 6.1 L/100km |
| Fuel Tank Capacity | 52 L | 60 L |
