2006 Opel Signum vs. 2005 Holden Astra
To start off, 2006 Opel Signum is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Holden Astra. In addition, the cost of maintenance, including insurance, on 2005 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 2005 Holden Astra. (120 HP @ 5600 RPM). In normal driving conditions, 2006 Opel Signum should accelerate faster than 2005 Holden Astra. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Signum weights approximately 410 kg more than 2005 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 2005 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 2005 Holden Astra. 2005 Holden Astra has automatic transmission and 2006 Opel Signum has manual transmission. 2006 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Holden Astra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Opel Signum | 2005 Holden Astra | |
| Make | Opel | Holden |
| Model | Signum | Astra |
| Year Released | 2006 | 2005 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1998 cc | 1794 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 120 HP |
| Engine RPM | 5500 RPM | 5600 RPM |
| Torque | 266 Nm | 165 Nm |
| Torque RPM | 2500 RPM | 3600 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1560 kg | 1150 kg |
| Vehicle Length | 4640 mm | 4260 mm |
| Vehicle Width | 1800 mm | 1720 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2840 mm | 2610 mm |
