2007 Citroen C4 vs. 2002 Opel Signum
To start off, 2007 Citroen C4 is newer by 5 year(s). Which means there will be less support and parts availability for 2002 Opel Signum. In addition, the cost of maintenance, including insurance, on 2002 Opel Signum would be higher. At 3,175 cc (6 cylinders), 2002 Opel Signum is equipped with a bigger engine. In terms of performance, 2002 Opel Signum (208 HP @ 6200 RPM) has 27 more horse power than 2007 Citroen C4. (181 HP @ 7000 RPM) In normal driving conditions, 2002 Opel Signum should accelerate faster than 2007 Citroen C4. With that said, vehicle weight also plays an important factor in acceleration. 2002 Opel Signum weights approximately 272 kg more than 2007 Citroen C4. 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, 2002 Opel Signum (300 Nm @ 4000 RPM) has 120 more torque (in Nm) than 2007 Citroen C4. (180 Nm @ 7000 RPM). This means 2002 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2007 Citroen C4.
Compare all specifications:
| 2007 Citroen C4 | 2002 Opel Signum | |
| Make | Citroen | Opel |
| Model | C4 | Signum |
| Year Released | 2007 | 2002 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1997 cc | 3175 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 181 HP | 208 HP |
| Engine RPM | 7000 RPM | 6200 RPM |
| Torque | 180 Nm | 300 Nm |
| Torque RPM | 7000 RPM | 4000 RPM |
| Engine Bore Size | 85 mm | 87.5 mm |
| Engine Stroke Size | 88 mm | 88 mm |
| Engine Compression Ratio | 10.8:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 227 km/hour | 237 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 1338 kg | 1610 kg |
| Vehicle Length | 4270 mm | 4640 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1460 mm | 1470 mm |
| Wheelbase Size | 2610 mm | 2840 mm |
| Fuel Consumption Overall | 11.5 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 60 L | 61 L |
