2004 Citroen C8 vs. 2007 Opel Signum
To start off, 2007 Opel Signum is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Citroen C8. In addition, the cost of maintenance, including insurance, on 2004 Citroen C8 would be higher. At 2,958 cc (6 cylinders), 2007 Opel Signum is equipped with a bigger engine. In terms of performance, 2007 Opel Signum (175 HP @ 4000 RPM) has 37 more horse power than 2004 Citroen C8. (138 HP @ 6000 RPM) In normal driving conditions, 2007 Opel Signum should accelerate faster than 2004 Citroen C8. With that said, vehicle weight also plays an important factor in acceleration. 2004 Citroen C8 weights approximately 17 kg more than 2007 Opel Signum.
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, 2007 Opel Signum (370 Nm @ 1900 RPM) has 180 more torque (in Nm) than 2004 Citroen C8. (190 Nm @ 4100 RPM). This means 2007 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2004 Citroen C8. 2007 Opel Signum has automatic transmission and 2004 Citroen C8 has manual transmission. 2004 Citroen C8 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 Citroen C8 | 2007 Opel Signum | |
| Make | Citroen | Opel |
| Model | C8 | Signum |
| Year Released | 2004 | 2007 |
| Body Type | Minivan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1997 cc | 2958 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 175 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 190 Nm | 370 Nm |
| Torque RPM | 4100 RPM | 1900 RPM |
| Engine Compression Ratio | 11.0:1 | 18.5:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1687 kg | 1670 kg |
| Vehicle Length | 4730 mm | 4640 mm |
| Vehicle Width | 1860 mm | 1800 mm |
| Vehicle Height | 1760 mm | 1470 mm |
| Wheelbase Size | 2830 mm | 2840 mm |
| Fuel Tank Capacity | 47 L | 60 L |
