2003 Opel Signum vs. 2003 Opel Vectra
To start off, both 2003 Opel Signum and 2003 Opel Vectra were released in the same year (2003). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 1,796 cc (4 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (125 HP @ 6000 RPM) has 5 more horse power than 2003 Opel Vectra. (120 HP @ 5400 RPM). In normal driving conditions, 2003 Opel Signum should accelerate faster than 2003 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 85 kg more than 2003 Opel Signum.
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 167 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:
| 2003 Opel Signum | 2003 Opel Vectra | |
| Make | Opel | Opel |
| Model | Signum | Vectra |
| Year Released | 2003 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 1794 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 125 HP | 120 HP |
| Engine RPM | 6000 RPM | 5400 RPM |
| Torque | 167 Nm | 167 Nm |
| Torque RPM | 3800 RPM | 3800 RPM |
| Engine Bore Size | 80.6 mm | 80.5 mm |
| Engine Stroke Size | 88.2 mm | 88.2 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1385 kg | 1470 kg |
| Vehicle Length | 4640 mm | 4830 mm |
| Vehicle Width | 1800 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1510 mm |
