2004 Opel Signum vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 3 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 3,175 cc (6 cylinders), 2004 Opel Signum is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (208 HP @ 6200 RPM) has 104 more horse power than 2007 Opel Astra. (104 HP @ 6000 RPM). In normal driving conditions, 2004 Opel Signum should accelerate faster than 2007 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 280 kg more than 2007 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 (300 Nm @ 4000 RPM) has 150 more torque (in Nm) than 2007 Opel Astra. (150 Nm @ 3900 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra.
Compare all specifications:
| 2004 Opel Signum | 2007 Opel Astra | |
| Make | Opel | Opel |
| Model | Signum | Astra |
| Year Released | 2004 | 2007 |
| Body Type | Hatchback | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3175 cc | 1598 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 208 HP | 104 HP |
| Engine RPM | 6200 RPM | 6000 RPM |
| Torque | 300 Nm | 150 Nm |
| Torque RPM | 4000 RPM | 3900 RPM |
| Engine Bore Size | 87.5 mm | 79 mm |
| Engine Stroke Size | 88 mm | 81.5 mm |
| Engine Compression Ratio | 10.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 237 km/hour | 185 km/hour |
| Acceleration 0-100mph | 7.9 seconds | 13 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 | 1595 kg | 1315 kg |
| Vehicle Length | 4640 mm | 4520 mm |
| Vehicle Width | 1800 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1510 mm |
| Wheelbase Size | 2740 mm | 2710 mm |
| Fuel Consumption Overall | 10.1 L/100km | 6.7 L/100km |
| Fuel Tank Capacity | 52 L | 52 L |
