2003 Opel Vectra vs. 2005 Proton 400
To start off, 2005 Proton 400 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. At 1,795 cc (4 cylinders), 2003 Opel Vectra is equipped with a bigger engine. In terms of performance, 2003 Opel Vectra (120 HP @ 5800 RPM) has 46 more horse power than 2005 Proton 400. (74 HP @ 6000 RPM). In normal driving conditions, 2003 Opel Vectra should accelerate faster than 2005 Proton 400. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 500 kg more than 2005 Proton 400. 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 (170 Nm @ 3800 RPM) has 62 more torque (in Nm) than 2005 Proton 400. (108 Nm @ 3000 RPM). This means 2003 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2005 Proton 400.
Compare all specifications:
| 2003 Opel Vectra | 2005 Proton 400 | |
| Make | Opel | Proton |
| Model | Vectra | 400 |
| Year Released | 2003 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1795 cc | 1299 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 120 HP | 74 HP |
| Engine RPM | 5800 RPM | 6000 RPM |
| Torque | 170 Nm | 108 Nm |
| Torque RPM | 3800 RPM | 3000 RPM |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1490 kg | 990 kg |
| Vehicle Length | 4500 mm | 4280 mm |
| Vehicle Width | 1710 mm | 1700 mm |
| Vehicle Height | 1430 mm | 1390 mm |
| Wheelbase Size | 2640 mm | 2510 mm |
