2003 Opel Vectra vs. 1999 Opel Signum
To start off, 2003 Opel Vectra is newer by 4 year(s). Which means there will be less support and parts availability for 1999 Opel Signum. In addition, the cost of maintenance, including insurance, on 1999 Opel Signum would be higher. At 1,998 cc (4 cylinders), 1999 Opel Signum is equipped with a bigger engine. In terms of performance, 1999 Opel Signum (148 HP @ 4000 RPM) has 48 more horse power than 2003 Opel Vectra. (100 HP @ 4300 RPM) In normal driving conditions, 1999 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 404 kg more than 1999 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, 1999 Opel Signum (270 Nm @ 2000 RPM) has 65 more torque (in Nm) than 2003 Opel Vectra. (205 Nm @ 1600 RPM). This means 1999 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Vectra.
Compare all specifications:
| 2003 Opel Vectra | 1999 Opel Signum | |
| Make | Opel | Opel |
| Model | Vectra | Signum |
| Year Released | 2003 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 1994 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 100 HP | 148 HP |
| Engine RPM | 4300 RPM | 4000 RPM |
| Torque | 205 Nm | 270 Nm |
| Torque RPM | 1600 RPM | 2000 RPM |
| Engine Bore Size | 84 mm | 82 mm |
| Engine Stroke Size | 90 mm | 90.4 mm |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1490 kg | 1086 kg |
| Vehicle Length | 4830 mm | 4640 mm |
| Vehicle Width | 1800 mm | 1800 mm |
| Vehicle Height | 1510 mm | 1470 mm |
