2007 Citroen C4 vs. 2003 Opel Signum
To start off, 2007 Citroen C4 is newer by 4 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 3,173 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (207 HP @ 6200 RPM) has 84 more horse power than 2007 Citroen C4. (123 HP @ 6000 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 2007 Citroen C4. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 28 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, 2003 Opel Signum (300 Nm @ 4000 RPM) has 130 more torque (in Nm) than 2007 Citroen C4. (170 Nm @ 3750 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2007 Citroen C4. 2003 Opel Signum has automatic transmission and 2007 Citroen C4 has manual transmission. 2007 Citroen C4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Citroen C4 | 2003 Opel Signum | |
| Make | Citroen | Opel |
| Model | C4 | Signum |
| Year Released | 2007 | 2003 |
| Body Type | Minivan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 3173 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 123 HP | 207 HP |
| Engine RPM | 6000 RPM | 6200 RPM |
| Torque | 170 Nm | 300 Nm |
| Torque RPM | 3750 RPM | 4000 RPM |
| Engine Bore Size | 82.7 mm | 87.5 mm |
| Engine Stroke Size | 81.4 mm | 88 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Top Speed | 185 km/hour | 235 km/hour |
| Acceleration 0-100mph | 13.4 seconds | 8.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1585 kg | 1613 kg |
| Vehicle Length | 4280 mm | 4640 mm |
| Vehicle Width | 1840 mm | 1800 mm |
| Vehicle Height | 1630 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2840 mm |
| Fuel Consumption Overall | 8 L/100km | 10.7 L/100km |
| Fuel Tank Capacity | 60 L | 60 L |
