2009 Citroen C4 vs. 2005 Opel Signum
To start off, 2009 Citroen C4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Opel Signum. In addition, the cost of maintenance, including insurance, on 2005 Opel Signum would be higher. At 1,997 cc (4 cylinders), 2009 Citroen C4 is equipped with a bigger engine. In terms of performance, 2005 Opel Signum (173 HP @ 5500 RPM) has 39 more horse power than 2009 Citroen C4. (134 HP @ 4000 RPM) In normal driving conditions, 2005 Opel Signum should accelerate faster than 2009 Citroen C4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Citroen C4 weights approximately 135 kg more than 2005 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, 2009 Citroen C4 (270 Nm @ 2000 RPM) has 5 more torque (in Nm) than 2005 Opel Signum. (265 Nm @ 2500 RPM). This means 2009 Citroen C4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum. 2009 Citroen C4 has automatic transmission and 2005 Opel Signum has manual transmission. 2005 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Citroen C4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Citroen C4 | 2005 Opel Signum | |
| Make | Citroen | Opel |
| Model | C4 | Signum |
| Year Released | 2009 | 2005 |
| Body Type | Minivan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1997 cc | 1908 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 134 HP | 173 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 270 Nm | 265 Nm |
| Torque RPM | 2000 RPM | 2500 RPM |
| Engine Bore Size | 85 mm | 86 mm |
| Engine Stroke Size | 88 mm | 86 mm |
| Engine Compression Ratio | 18.0:1 | 9.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 195 km/hour | 220 km/hour |
| Acceleration 0-100mph | 13.7 seconds | 9.4 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1695 kg | 1560 kg |
| Vehicle Length | 4590 mm | 4640 mm |
| Vehicle Width | 1840 mm | 1800 mm |
| Vehicle Height | 1630 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2620 mm |
| Fuel Consumption Overall | 6.1 L/100km | 9.2 L/100km |
| Fuel Tank Capacity | 60 L | 60 L |
