2003 Opel Vectra vs. 2006 Opel Speedster
To start off, 2006 Opel Speedster is newer by 3 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. At 2,957 cc (6 cylinders), 2003 Opel Vectra is equipped with a bigger engine. In terms of performance, 2006 Opel Speedster (197 HP @ 5500 RPM) has 24 more horse power than 2003 Opel Vectra. (173 HP @ 4000 RPM) In normal driving conditions, 2006 Opel Speedster should accelerate faster than 2003 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 600 kg more than 2006 Opel Speedster.
Because 2006 Opel Speedster is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2006 Opel Speedster. However, in wet, icy, snow, or gravel driving conditions, 2003 Opel Vectra, being front wheel drive (FWD), will offer much better control with better grip. 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 120 more torque (in Nm) than 2006 Opel Speedster. (250 Nm @ 1950 RPM). This means 2003 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Speedster.
Compare all specifications:
| 2003 Opel Vectra | 2006 Opel Speedster | |
| Make | Opel | Opel |
| Model | Vectra | Speedster |
| Year Released | 2003 | 2006 |
| Engine Position | Front | Middle |
| Engine Size | 2957 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 197 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 370 Nm | 250 Nm |
| Torque RPM | 1900 RPM | 1950 RPM |
| Engine Bore Size | 87.5 mm | 86.1 mm |
| Engine Stroke Size | 82 mm | 86 mm |
| Engine Compression Ratio | 18.5:1 | 8.8:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1605 kg | 1005 kg |
| Vehicle Length | 4600 mm | 3790 mm |
| Vehicle Width | 1770 mm | 1710 mm |
| Vehicle Height | 1470 mm | 1120 mm |
| Wheelbase Size | 2740 mm | 2340 mm |
| Fuel Consumption Overall | 7 L/100km | 8.5 L/100km |
| Fuel Tank Capacity | 60 L | 36 L |
