2003 Opel Signum vs. 2005 Rover 75
To start off, 2005 Rover 75 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 1,796 cc (4 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2005 Rover 75 (122 HP @ 5500 RPM) has 2 more horse power than 2003 Opel Signum. (120 HP @ 6000 RPM) In normal driving conditions, 2005 Rover 75 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 60 kg more than 2005 Rover 75.
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 Signum (166 Nm @ 3800 RPM) has 4 more torque (in Nm) than 2005 Rover 75. (162 Nm @ 4000 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2005 Rover 75.
Compare all specifications:
| 2003 Opel Signum | 2005 Rover 75 | |
| Make | Opel | Rover |
| Model | Signum | 75 |
| Year Released | 2003 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 1769 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 120 HP | 122 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 166 Nm | 162 Nm |
| Torque RPM | 3800 RPM | 4000 RPM |
| Engine Bore Size | 80.5 mm | 80 mm |
| Engine Stroke Size | 88.2 mm | 89.3 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1535 kg | 1475 kg |
| Vehicle Length | 4640 mm | 4800 mm |
| Vehicle Width | 1800 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2840 mm | 2830 mm |
