2008 Citroen C4 vs. 2003 Opel Signum
To start off, 2008 Citroen C4 is newer by 5 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 2,958 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (175 HP @ 4000 RPM) has 37 more horse power than 2008 Citroen C4. (138 HP @ 6000 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 2008 Citroen C4. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 35 kg more than 2008 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, 2003 Opel Signum (371 Nm @ 1900 RPM) has 171 more torque (in Nm) than 2008 Citroen C4. (200 Nm @ 4000 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2008 Citroen C4.
Compare all specifications:
| 2008 Citroen C4 | 2003 Opel Signum | |
| Make | Citroen | Opel |
| Model | C4 | Signum |
| Year Released | 2008 | 2003 |
| Body Type | Minivan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1995 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 | 200 Nm | 371 Nm |
| Torque RPM | 4000 RPM | 1900 RPM |
| Engine Bore Size | 85 mm | 87.5 mm |
| Engine Stroke Size | 88 mm | 82 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 195 km/hour | 221 km/hour |
| Acceleration 0-100mph | 12.6 seconds | 9.4 seconds |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1635 kg | 1670 kg |
| Vehicle Length | 4590 mm | 4640 mm |
| Vehicle Width | 1840 mm | 1800 mm |
| Vehicle Height | 1630 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2700 mm |
| Fuel Consumption Overall | 8 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 60 L | 60 L |
