2003 Opel Vectra vs. 2004 Rover 75
To start off, 2004 Rover 75 is newer by 1 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 4,601 cc (8 cylinders), 2004 Rover 75 is equipped with a bigger engine. In terms of performance, 2004 Rover 75 (256 HP @ 5000 RPM) has 82 more horse power than 2003 Opel Vectra. (174 HP @ 4000 RPM) In normal driving conditions, 2004 Rover 75 should accelerate faster than 2003 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 24 kg more than 2004 Rover 75.
Because 2004 Rover 75 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 2004 Rover 75. 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, 2004 Rover 75 (410 Nm @ 4000 RPM) has 40 more torque (in Nm) than 2003 Opel Vectra. (370 Nm @ 1900 RPM). This means 2004 Rover 75 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Vectra.
Compare all specifications:
| 2003 Opel Vectra | 2004 Rover 75 | |
| Make | Opel | Rover |
| Model | Vectra | 75 |
| Year Released | 2003 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 4601 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 174 HP | 256 HP |
| Engine RPM | 4000 RPM | 5000 RPM |
| Torque | 370 Nm | 410 Nm |
| Torque RPM | 1900 RPM | 4000 RPM |
| Engine Bore Size | 87.5 mm | 90.3 mm |
| Engine Stroke Size | 82 mm | 90 mm |
| Acceleration 0-100mph | 10.1 seconds | 7.4 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1764 kg | 1740 kg |
| Wheelbase Size | 2840 mm | 2630 mm |
| Fuel Consumption | 5.8 L/100km | 10.5 L/100km |
| Fuel Consumption City | 11 L/100km | 18.3 L/100km |
| Fuel Consumption Overall | 7.7 L/100km | 13.4 L/100km |
