2001 Opel Astra vs. 2003 Opel Signum
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 75 more horse power than 2001 Opel Astra. (100 HP @ 5800 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 320 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 221 more torque (in Nm) than 2001 Opel Astra. (150 Nm @ 3600 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:
| 2001 Opel Astra | 2003 Opel Signum | |
| Make | Opel | Opel |
| Model | Astra | Signum |
| Year Released | 2001 | 2003 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1584 cc | 2958 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 100 HP | 175 HP |
| Engine RPM | 5800 RPM | 4000 RPM |
| Torque | 150 Nm | 371 Nm |
| Torque RPM | 3600 RPM | 1900 RPM |
| Engine Bore Size | 79 mm | 87.5 mm |
| Engine Stroke Size | 81.5 mm | 82 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1350 kg | 1670 kg |
| Vehicle Length | 4280 mm | 4640 mm |
| Vehicle Width | 1720 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2620 mm | 2700 mm |
| Fuel Tank Capacity | 52 L | 60 L |
