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 3,175 cc (6 cylinders), 2003 Opel Vectra is equipped with a bigger engine. In terms of performance, 2003 Opel Vectra (209 HP @ 6200 RPM) has 110 more horse power than 2003 Opel Signum. (99 HP @ 3120 RPM) In normal driving conditions, 2003 Opel Vectra should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 5 kg more than 2003 Opel Signum. 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 Vectra (300 Nm @ 4000 RPM) has 70 more torque (in Nm) than 2003 Opel Signum. (230 Nm @ 1500 RPM). This means 2003 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
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 | 1998 cc | 3175 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 99 HP | 209 HP |
| Engine RPM | 3120 RPM | 6200 RPM |
| Torque | 230 Nm | 300 Nm |
| Torque RPM | 1500 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 87.5 mm |
| Engine Stroke Size | 90 mm | 88 mm |
| Engine Compression Ratio | 18.5:1 | 10.0:1 |
| Top Speed | 185 km/hour | 239 km/hour |
| Acceleration 0-100mph | 14.3 seconds | 8.1 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1620 kg | 1625 kg |
| Vehicle Length | 4640 mm | 4830 mm |
| Vehicle Width | 1800 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1510 mm |
| Wheelbase Size | 2840 mm | 2840 mm |
| Fuel Consumption | 4.8 L/100km | 7.6 L/100km |
| Fuel Consumption City | 7.9 L/100km | 14.3 L/100km |
| Fuel Consumption Overall | 5.9 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 60 L | 60 L |
