2004 Opel Signum vs. 2008 Rover 75
To start off, 2008 Rover 75 is newer by 4 year(s). Which means there will be less support and parts availability for 2004 Opel Signum. In addition, the cost of maintenance, including insurance, on 2004 Opel Signum would be higher. At 4,601 cc (8 cylinders), 2008 Rover 75 is equipped with a bigger engine. In terms of performance, 2008 Rover 75 (256 HP) has 83 more horse power than 2004 Opel Signum. (173 HP) In normal driving conditions, 2008 Rover 75 should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 145 kg more than 2008 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, 2004 Opel Signum (265 Nm @ 2500 RPM) has 20 more torque (in Nm) than 2008 Rover 75. (245 Nm @ 4000 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2008 Rover 75.
Compare all specifications:
| 2004 Opel Signum | 2008 Rover 75 | |
| Make | Opel | Rover |
| Model | Signum | 75 |
| Year Released | 2004 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 4601 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 173 HP | 256 HP |
| Torque | 265 Nm | 245 Nm |
| Torque RPM | 2500 RPM | 4000 RPM |
| Engine Bore Size | 86 mm | 90.2 mm |
| Engine Stroke Size | 86 mm | 90 mm |
| Engine Compression Ratio | 9.5:1 | 9.4:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 220 km/hour | 250 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1560 kg | 1415 kg |
| Vehicle Length | 4640 mm | 4750 mm |
| Vehicle Width | 1800 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2840 mm | 2750 mm |
| Fuel Consumption Overall | 9.4 L/100km | 13.4 L/100km |
| Fuel Tank Capacity | 60 L | 65 L |
