2003 Opel Vectra vs. 2005 Opel Astra
To start off, 2005 Opel Astra 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 2,958 cc (6 cylinders), 2003 Opel Vectra is equipped with a bigger engine. In terms of performance, 2003 Opel Vectra (174 HP @ 4000 RPM) has 51 more horse power than 2005 Opel Astra. (123 HP @ 5800 RPM). In normal driving conditions, 2003 Opel Vectra should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 581 kg more than 2005 Opel Astra. 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 (370 Nm @ 1900 RPM) has 190 more torque (in Nm) than 2005 Opel Astra. (180 Nm @ 4400 RPM). This means 2003 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra. 2003 Opel Vectra has automatic transmission and 2005 Opel Astra has manual transmission. 2005 Opel Astra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Opel Vectra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Opel Vectra | 2005 Opel Astra | |
| Make | Opel | Opel |
| Model | Vectra | Astra |
| Year Released | 2003 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 1997 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 174 HP | 123 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 370 Nm | 180 Nm |
| Torque RPM | 1900 RPM | 4400 RPM |
| Engine Bore Size | 87.5 mm | 86 mm |
| Engine Stroke Size | 82 mm | 86 mm |
| Engine Compression Ratio | 18.5:1 | 9.6:1 |
| Top Speed | 220 km/hour | 201 km/hour |
| Acceleration 0-100mph | 10.1 seconds | 9.6 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1764 kg | 1183 kg |
| Wheelbase Size | 2840 mm | 2500 mm |
| Fuel Consumption Overall | 7.7 L/100km | 11.7 L/100km |
| Fuel Tank Capacity | 60 L | 52 L |
