2009 Citroen C6 vs. 2003 Opel Signum
To start off, 2009 Citroen C6 is newer by 6 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 2,958 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2009 Citroen C6 (201 HP @ 4200 RPM) has 27 more horse power than 2003 Opel Signum. (174 HP @ 4000 RPM). In normal driving conditions, 2009 Citroen C6 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2009 Citroen C6 weights approximately 175 kg more than 2003 Opel Signum. 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, 2009 Citroen C6 (440 Nm @ 1900 RPM) has 70 more torque (in Nm) than 2003 Opel Signum. (370 Nm @ 1900 RPM). This means 2009 Citroen C6 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
Compare all specifications:
| 2009 Citroen C6 | 2003 Opel Signum | |
| Make | Citroen | Opel |
| Model | C6 | Signum |
| Year Released | 2009 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2720 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 201 HP | 174 HP |
| Engine RPM | 4200 RPM | 4000 RPM |
| Torque | 440 Nm | 370 Nm |
| Torque RPM | 1900 RPM | 1900 RPM |
| Engine Bore Size | 81 mm | 87.6 mm |
| Engine Stroke Size | 88 mm | 82 mm |
| Engine Compression Ratio | 17.3:1 | 18.5:1 |
| Acceleration 0-100mph | 9.6 seconds | 9.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1870 kg | 1695 kg |
| Vehicle Length | 4910 mm | 4640 mm |
| Vehicle Width | 1870 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2910 mm | 2710 mm |
| Fuel Consumption Overall | 8.7 L/100km | 7.9 L/100km |
| Fuel Tank Capacity | 72 L | 60 L |
