2004 Opel Signum vs. 2011 Citroen C4
To start off, 2011 Citroen C4 is newer by 7 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 1,908 cc (4 cylinders), 2004 Opel Signum is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (148 HP @ 4000 RPM) has 40 more horse power than 2011 Citroen C4. (108 HP @ 4000 RPM). In normal driving conditions, 2004 Opel Signum should accelerate faster than 2011 Citroen C4. With that said, vehicle weight also plays an important factor in acceleration. 2011 Citroen C4 weights approximately 4 kg more than 2004 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, 2004 Opel Signum (326 Nm @ 2000 RPM) has 86 more torque (in Nm) than 2011 Citroen C4. (240 Nm @ 1750 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2011 Citroen C4.
Compare all specifications:
| 2004 Opel Signum | 2011 Citroen C4 | |
| Make | Opel | Citroen |
| Model | Signum | C4 |
| Year Released | 2004 | 2011 |
| Body Type | Hatchback | Minivan |
| Engine Position | Front | Front |
| Engine Size | 1908 cc | 1560 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 108 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 326 Nm | 240 Nm |
| Torque RPM | 2000 RPM | 1750 RPM |
| Engine Bore Size | 82 mm | 75 mm |
| Engine Stroke Size | 90.4 mm | 88 mm |
| Engine Compression Ratio | 18.0:1 | 18.0:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 209 km/hour | 180 km/hour |
| Acceleration 0-100mph | 10.5 seconds | 14.8 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1610 kg | 1614 kg |
| Vehicle Length | 4640 mm | 4590 mm |
| Vehicle Width | 1800 mm | 1840 mm |
| Vehicle Height | 1470 mm | 1630 mm |
| Wheelbase Size | 2840 mm | 2730 mm |
| Fuel Consumption Overall | 6.1 L/100km | 5.9 L/100km |
| Fuel Tank Capacity | 60 L | 60 L |
