2004 Citroen C4 vs. 1999 Opel Signum
To start off, 2004 Citroen C4 is newer by 5 year(s). Which means there will be less support and parts availability for 1999 Opel Signum. In addition, the cost of maintenance, including insurance, on 1999 Opel Signum would be higher. At 3,175 cc (6 cylinders), 1999 Opel Signum is equipped with a bigger engine. In terms of performance, 1999 Opel Signum (208 HP @ 6200 RPM) has 73 more horse power than 2004 Citroen C4. (135 HP @ 4000 RPM) In normal driving conditions, 1999 Opel Signum should accelerate faster than 2004 Citroen C4. With that said, vehicle weight also plays an important factor in acceleration. 1999 Opel Signum weights approximately 335 kg more than 2004 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, 2004 Citroen C4 (314 Nm @ 2000 RPM) has 14 more torque (in Nm) than 1999 Opel Signum. (300 Nm @ 4000 RPM). This means 2004 Citroen C4 will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Signum.
Compare all specifications:
| 2004 Citroen C4 | 1999 Opel Signum | |
| Make | Citroen | Opel |
| Model | C4 | Signum |
| Year Released | 2004 | 1999 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1997 cc | 3175 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 135 HP | 208 HP |
| Engine RPM | 4000 RPM | 6200 RPM |
| Torque | 314 Nm | 300 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 85 mm | 87.5 mm |
| Engine Stroke Size | 88 mm | 88 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1275 kg | 1610 kg |
| Vehicle Length | 4270 mm | 4640 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1460 mm | 1470 mm |
| Wheelbase Size | 2620 mm | 2840 mm |
| Fuel Tank Capacity | 60 L | 52 L |
