2009 Alfa Romeo GT vs. 2003 Opel Vectra
To start off, 2009 Alfa Romeo GT is newer by 6 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 1,994 cc (4 cylinders), 2003 Opel Vectra is equipped with a bigger engine. In terms of performance, 2003 Opel Vectra (173 HP @ 5500 RPM) has 35 more horse power than 2009 Alfa Romeo GT. (138 HP @ 6500 RPM) In normal driving conditions, 2003 Opel Vectra should accelerate faster than 2009 Alfa Romeo GT. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 145 kg more than 2009 Alfa Romeo GT. 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 (270 Nm @ 2500 RPM) has 107 more torque (in Nm) than 2009 Alfa Romeo GT. (163 Nm @ 3900 RPM). This means 2003 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2009 Alfa Romeo GT.
Compare all specifications:
| 2009 Alfa Romeo GT | 2003 Opel Vectra | |
| Make | Alfa Romeo | Opel |
| Model | GT | Vectra |
| Year Released | 2009 | 2003 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 1994 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 173 HP |
| Engine RPM | 6500 RPM | 5500 RPM |
| Torque | 163 Nm | 270 Nm |
| Torque RPM | 3900 RPM | 2500 RPM |
| Engine Bore Size | 82 mm | 86 mm |
| Engine Stroke Size | 82.7 mm | 86 mm |
| Engine Compression Ratio | 10.3:1 | 9.5:1 |
| Top Speed | 200 km/hour | 230 km/hour |
| Acceleration 0-100mph | 10.6 seconds | 9.4 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1365 kg | 1510 kg |
| Vehicle Length | 4500 mm | 4600 mm |
| Vehicle Width | 1770 mm | 1800 mm |
| Vehicle Height | 1370 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2840 mm |
| Fuel Consumption Overall | 8.5 L/100km | 8.9 L/100km |
| Fuel Tank Capacity | 63 L | 61 L |
