2002 Opel Signum vs. 2005 Opel Vectra
To start off, 2005 Opel Vectra is newer by 3 year(s). Which means there will be less support and parts availability for 2002 Opel Signum. In addition, the cost of maintenance, including insurance, on 2002 Opel Signum would be higher. At 1,995 cc (4 cylinders), 2002 Opel Signum is equipped with a bigger engine. In terms of performance, 2005 Opel Vectra (145 HP @ 4000 RPM) has 45 more horse power than 2002 Opel Signum. (100 HP @ 3120 RPM) In normal driving conditions, 2005 Opel Vectra should accelerate faster than 2002 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2002 Opel Signum weights approximately 385 kg more than 2005 Opel Vectra.
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, 2005 Opel Vectra (316 Nm @ 2000 RPM) has 86 more torque (in Nm) than 2002 Opel Signum. (230 Nm @ 1500 RPM). This means 2005 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2002 Opel Signum.
Compare all specifications:
| 2002 Opel Signum | 2005 Opel Vectra | |
| Make | Opel | Opel |
| Model | Signum | Vectra |
| Year Released | 2002 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1910 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 100 HP | 145 HP |
| Engine RPM | 3120 RPM | 4000 RPM |
| Torque | 230 Nm | 316 Nm |
| Torque RPM | 1500 RPM | 2000 RPM |
| Engine Bore Size | 84 mm | 82 mm |
| Engine Stroke Size | 90 mm | 90.4 mm |
| Fuel Type | Diesel | Diesel |
| Top Speed | 185 km/hour | 217 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1595 kg | 1210 kg |
| Vehicle Length | 4640 mm | 4600 mm |
| Vehicle Width | 1720 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2610 mm | 2690 mm |
| Fuel Consumption Overall | 5.9 L/100km | 5.9 L/100km |
| Fuel Tank Capacity | 60 L | 61 L |
