2003 Opel Signum vs. 2001 Opel Astra
To start off, 2003 Opel Signum is newer by 2 year(s). Which means there will be less support and parts availability for 2001 Opel Astra. In addition, the cost of maintenance, including insurance, on 2001 Opel Astra would be higher. At 2,958 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (175 HP @ 4000 RPM) has 23 more horse power than 2001 Opel Astra. (152 HP @ 5400 RPM). In normal driving conditions, 2003 Opel Signum should accelerate faster than 2001 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 280 kg more than 2001 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, 2003 Opel Signum (371 Nm @ 1900 RPM) has 168 more torque (in Nm) than 2001 Opel Astra. (203 Nm @ 4000 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2001 Opel Astra.
Compare all specifications:
| 2003 Opel Signum | 2001 Opel Astra | |
| Make | Opel | Opel |
| Model | Signum | Astra |
| Year Released | 2003 | 2001 |
| Body Type | Hatchback | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 2171 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 152 HP |
| Engine RPM | 4000 RPM | 5400 RPM |
| Torque | 371 Nm | 203 Nm |
| Torque RPM | 1900 RPM | 4000 RPM |
| Engine Bore Size | 87.5 mm | 86 mm |
| Engine Stroke Size | 82 mm | 94.6 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1670 kg | 1390 kg |
| Vehicle Length | 4640 mm | 4280 mm |
| Vehicle Width | 1800 mm | 1720 mm |
| Vehicle Height | 1470 mm | 1400 mm |
| Wheelbase Size | 2700 mm | 2620 mm |
| Fuel Tank Capacity | 60 L | 53 L |
