2005 Alfa Romeo Spider vs. 2003 Opel Vectra
To start off, 2005 Alfa Romeo Spider is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2003 Opel Vectra would be higher. Both 2005 Alfa Romeo Spider and 2003 Opel Vectra are equipped with a 2,957 cc engine. In terms of performance, 2005 Alfa Romeo Spider (215 HP @ 5000 RPM) has 42 more horse power than 2003 Opel Vectra. (173 HP @ 4000 RPM). In normal driving conditions, 2005 Alfa Romeo Spider should accelerate faster than 2003 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 250 kg more than 2005 Alfa Romeo Spider.
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 (370 Nm @ 1900 RPM) has 105 more torque (in Nm) than 2005 Alfa Romeo Spider. (265 Nm @ 5000 RPM). This means 2003 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2005 Alfa Romeo Spider.
Compare all specifications:
| 2005 Alfa Romeo Spider | 2003 Opel Vectra | |
| Make | Alfa Romeo | Opel |
| Model | Spider | Vectra |
| Year Released | 2005 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2957 cc | 2957 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 173 HP |
| Engine RPM | 5000 RPM | 4000 RPM |
| Torque | 265 Nm | 370 Nm |
| Torque RPM | 5000 RPM | 1900 RPM |
| Engine Bore Size | 93 mm | 87.5 mm |
| Engine Stroke Size | 72.6 mm | 82 mm |
| Engine Compression Ratio | 10.0:1 | 18.5:1 |
| Top Speed | 235 km/hour | 226 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1355 kg | 1605 kg |
| Vehicle Length | 4290 mm | 4600 mm |
| Vehicle Width | 1790 mm | 1770 mm |
| Vehicle Height | 1320 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2740 mm |
| Fuel Consumption Overall | 11 L/100km | 7 L/100km |
| Fuel Tank Capacity | 70 L | 60 L |
