2003 Opel Signum vs. 2001 Opel Vectra
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 Vectra. In addition, the cost of maintenance, including insurance, on 2001 Opel Vectra would be higher. At 2,196 cc (4 cylinders), 2001 Opel Vectra is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (152 HP @ 5600 RPM) has 10 more horse power than 2001 Opel Vectra. (142 HP @ 5600 RPM). In normal driving conditions, 2003 Opel Signum should accelerate faster than 2001 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 250 kg more than 2001 Opel Vectra. 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 (220 Nm @ 3800 RPM) has 17 more torque (in Nm) than 2001 Opel Vectra. (203 Nm @ 4000 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2001 Opel Vectra. 2003 Opel Signum has automatic transmission and 2001 Opel Vectra has manual transmission. 2001 Opel Vectra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Opel Signum | 2001 Opel Vectra | |
| Make | Opel | Opel |
| Model | Signum | Vectra |
| Year Released | 2003 | 2001 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 2196 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 152 HP | 142 HP |
| Engine RPM | 5600 RPM | 5600 RPM |
| Torque | 220 Nm | 203 Nm |
| Torque RPM | 3800 RPM | 4000 RPM |
| Engine Bore Size | 86 mm | 86 mm |
| Engine Stroke Size | 94.6 mm | 94.6 mm |
| Engine Compression Ratio | 12.0:1 | 10.0:1 |
| Top Speed | 206 km/hour | 216 km/hour |
| Acceleration 0-100mph | 11 seconds | 10.2 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1565 kg | 1315 kg |
| Vehicle Length | 4640 mm | 4600 mm |
| Vehicle Width | 1800 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2840 mm | 2650 mm |
| Fuel Tank Capacity | 60 L | 60 L |
