2006 Opel Astra vs. 2003 Opel Signum
To start off, 2006 Opel Astra is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 2,198 cc (4 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (144 HP @ 6000 RPM) has 45 more horse power than 2006 Opel Astra. (99 HP @ 4400 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 321 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, both vehicles can yield 240 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles.
Compare all specifications:
| 2006 Opel Astra | 2003 Opel Signum | |
| Make | Opel | Opel |
| Model | Astra | Signum |
| Year Released | 2006 | 2003 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1686 cc | 2198 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 99 HP | 144 HP |
| Engine RPM | 4400 RPM | 6000 RPM |
| Torque | 240 Nm | 240 Nm |
| Torque RPM | 2300 RPM | 3800 RPM |
| Engine Bore Size | 79 mm | 86 mm |
| Engine Stroke Size | 86 mm | 94.6 mm |
| Engine Compression Ratio | 18.4:1 | 12.0:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 1365 kg | 1686 kg |
| Vehicle Length | 4300 mm | 4640 mm |
| Vehicle Width | 1760 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2620 mm | 2640 mm |
| Fuel Consumption | 4.2 L/100km | 7.2 L/100km |
| Fuel Consumption Overall | 5 L/100km | 5.2 L/100km |
| Fuel Tank Capacity | 52 L | 58 L |
