2009 Cadillac STS vs. 2007 Citroen C6
To start off, 2009 Cadillac STS is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Citroen C6. In addition, the cost of maintenance, including insurance, on 2007 Citroen C6 would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (321 HP @ 6400 RPM) has 120 more horse power than 2007 Citroen C6. (201 HP @ 4200 RPM). In normal driving conditions, 2009 Cadillac STS should accelerate faster than 2007 Citroen C6. With that said, vehicle weight also plays an important factor in acceleration. 2007 Citroen C6 weights approximately 50 kg more than 2009 Cadillac STS.
Because 2009 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 2007 Citroen C6. In wet, icy, snow, or gravel driving conditions, 2009 Cadillac STS will offer significantly more control. 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 C6 (441 Nm @ 1900 RPM) has 14 more torque (in Nm) than 2009 Cadillac STS. (427 Nm @ 4400 RPM). This means 2007 Citroen C6 will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2007 Citroen C6 | |
| Make | Cadillac | Citroen |
| Model | STS | C6 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 2720 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 321 HP | 201 HP |
| Engine RPM | 6400 RPM | 4200 RPM |
| Torque | 427 Nm | 441 Nm |
| Torque RPM | 4400 RPM | 1900 RPM |
| Engine Bore Size | 93 mm | 81 mm |
| Engine Stroke Size | 84 mm | 88 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 250 km/hour | 230 km/hour |
| Acceleration 0-100mph | 6.2 seconds | 9.3 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1820 kg | 1870 kg |
| Vehicle Length | 4990 mm | 4910 mm |
| Vehicle Width | 1850 mm | 1870 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2960 mm | 2910 mm |
| Fuel Consumption Overall | 16.8 L/100km | 8.7 L/100km |
| Fuel Tank Capacity | 66 L | 72 L |
