2009 Citroen C6 vs. 2004 Alfa Romeo 166
To start off, 2009 Citroen C6 is newer by 5 year(s). Which means there will be less support and parts availability for 2004 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2004 Alfa Romeo 166 would be higher. At 2,720 cc (6 cylinders), 2009 Citroen C6 is equipped with a bigger engine. In terms of performance, 2009 Citroen C6 (201 HP @ 4200 RPM) has 53 more horse power than 2004 Alfa Romeo 166. (148 HP @ 6500 RPM). In normal driving conditions, 2009 Citroen C6 should accelerate faster than 2004 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2009 Citroen C6 weights approximately 360 kg more than 2004 Alfa Romeo 166. 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 259 more torque (in Nm) than 2004 Alfa Romeo 166. (181 Nm @ 3800 RPM). This means 2009 Citroen C6 will have an easier job in driving up hills or pulling heavy equipment than 2004 Alfa Romeo 166. 2009 Citroen C6 has automatic transmission and 2004 Alfa Romeo 166 has manual transmission. 2004 Alfa Romeo 166 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Citroen C6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Citroen C6 | 2004 Alfa Romeo 166 | |
| Make | Citroen | Alfa Romeo |
| Model | C6 | 166 |
| Year Released | 2009 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2720 cc | 1970 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 201 HP | 148 HP |
| Engine RPM | 4200 RPM | 6500 RPM |
| Torque | 440 Nm | 181 Nm |
| Torque RPM | 1900 RPM | 3800 RPM |
| Engine Bore Size | 81 mm | 83 mm |
| Engine Stroke Size | 88 mm | 91 mm |
| Engine Compression Ratio | 17.3:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 230 km/hour | 211 km/hour |
| Acceleration 0-100mph | 9.6 seconds | 9.8 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1870 kg | 1510 kg |
| Vehicle Length | 4910 mm | 4730 mm |
| Vehicle Width | 1870 mm | 1810 mm |
| Vehicle Height | 1470 mm | 1420 mm |
| Wheelbase Size | 2910 mm | 2710 mm |
| Fuel Consumption Overall | 8.7 L/100km | 9.9 L/100km |
