2006 Citroen C6 vs. 2008 Opel Signum
To start off, 2008 Opel Signum is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Citroen C6. In addition, the cost of maintenance, including insurance, on 2006 Citroen C6 would be higher. At 3,175 cc (6 cylinders), 2008 Opel Signum is equipped with a bigger engine. In terms of performance, both vehicles can yield 208 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 2006 Citroen C6 weights approximately 208 kg more than 2008 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, 2008 Opel Signum (300 Nm @ 4000 RPM) has 10 more torque (in Nm) than 2006 Citroen C6. (290 Nm @ 3750 RPM). This means 2008 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2006 Citroen C6. 2006 Citroen C6 has automatic transmission and 2008 Opel Signum has manual transmission. 2008 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Citroen C6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Citroen C6 | 2008 Opel Signum | |
| Make | Citroen | Opel |
| Model | C6 | Signum |
| Year Released | 2006 | 2008 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2946 cc | 3175 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 208 HP | 208 HP |
| Engine RPM | 6000 RPM | 6200 RPM |
| Torque | 290 Nm | 300 Nm |
| Torque RPM | 3750 RPM | 4000 RPM |
| Engine Bore Size | 87 mm | 87.5 mm |
| Engine Stroke Size | 82.6 mm | 88 mm |
| Engine Compression Ratio | 10.9:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 230 km/hour | 237 km/hour |
| Acceleration 0-100mph | 10 seconds | 7.9 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1818 kg | 1610 kg |
| Vehicle Length | 4910 mm | 4640 mm |
| Vehicle Width | 1870 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2910 mm | 2840 mm |
| Fuel Consumption Overall | 11.2 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 72 L | 60 L |
