2003 Holden Astra vs. 2006 Opel Signum
To start off, 2006 Opel Signum is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Holden Astra. In addition, the cost of maintenance, including insurance, on 2003 Holden Astra would be higher. At 1,998 cc (4 cylinders), 2006 Opel Signum is equipped with a bigger engine. In terms of performance, 2006 Opel Signum (173 HP @ 5500 RPM) has 53 more horse power than 2003 Holden Astra. (120 HP @ 5600 RPM) In normal driving conditions, 2006 Opel Signum should accelerate faster than 2003 Holden Astra. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Signum weights approximately 408 kg more than 2003 Holden 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, 2006 Opel Signum (266 Nm @ 2500 RPM) has 101 more torque (in Nm) than 2003 Holden Astra. (165 Nm @ 3600 RPM). This means 2006 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2003 Holden Astra.
Compare all specifications:
| 2003 Holden Astra | 2006 Opel Signum | |
| Make | Holden | Opel |
| Model | Astra | Signum |
| Year Released | 2003 | 2006 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 120 HP | 173 HP |
| Engine RPM | 5600 RPM | 5500 RPM |
| Torque | 165 Nm | 266 Nm |
| Torque RPM | 3600 RPM | 2500 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 1152 kg | 1560 kg |
| Vehicle Length | 4120 mm | 4640 mm |
| Vehicle Width | 1720 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2610 mm | 2840 mm |
