2007 Citroen C4 vs. 2007 Opel Signum
To start off, both 2007 Citroen C4 and 2007 Opel Signum were released in the same year (2007). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 2,196 cc (4 cylinders), 2007 Opel Signum is equipped with a bigger engine. In terms of performance, 2007 Opel Signum (153 HP @ 5600 RPM) has 42 more horse power than 2007 Citroen C4. (111 HP @ 4000 RPM) In normal driving conditions, 2007 Opel Signum should accelerate faster than 2007 Citroen C4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Signum weights approximately 255 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, 2007 Citroen C4 (240 Nm @ 4000 RPM) has 20 more torque (in Nm) than 2007 Opel Signum. (220 Nm @ 3800 RPM). This means 2007 Citroen C4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Signum.
Compare all specifications:
| 2007 Citroen C4 | 2007 Opel Signum | |
| Make | Citroen | Opel |
| Model | C4 | Signum |
| Year Released | 2007 | 2007 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1560 cc | 2196 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 111 HP | 153 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 240 Nm | 220 Nm |
| Torque RPM | 4000 RPM | 3800 RPM |
| Engine Bore Size | 75 mm | 86 mm |
| Engine Stroke Size | 88.3 mm | 94.6 mm |
| Engine Compression Ratio | 18.0:1 | 12.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 192 km/hour | 211 km/hour |
| Acceleration 0-100mph | 11.2 seconds | 9.8 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 | 1280 kg | 1535 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 | 4.7 L/100km | 8.1 L/100km |
| Fuel Tank Capacity | 60 L | 60 L |
