2007 Alfa Romeo 166 vs. 2009 Citroen C6
To start off, 2009 Citroen C6 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2007 Alfa Romeo 166 would be higher. At 3,179 cc (6 cylinders), 2007 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2007 Alfa Romeo 166 (236 HP @ 6200 RPM) has 35 more horse power than 2009 Citroen C6. (201 HP @ 4200 RPM). In normal driving conditions, 2007 Alfa Romeo 166 should accelerate faster than 2009 Citroen C6. With that said, vehicle weight also plays an important factor in acceleration. 2009 Citroen C6 weights approximately 328 kg more than 2007 Alfa Romeo 166.
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 151 more torque (in Nm) than 2007 Alfa Romeo 166. (289 Nm @ 4800 RPM). This means 2009 Citroen C6 will have an easier job in driving up hills or pulling heavy equipment than 2007 Alfa Romeo 166. 2009 Citroen C6 has automatic transmission and 2007 Alfa Romeo 166 has manual transmission. 2007 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:
| 2007 Alfa Romeo 166 | 2009 Citroen C6 | |
| Make | Alfa Romeo | Citroen |
| Model | 166 | C6 |
| Year Released | 2007 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3179 cc | 2720 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 236 HP | 201 HP |
| Engine RPM | 6200 RPM | 4200 RPM |
| Torque | 289 Nm | 440 Nm |
| Torque RPM | 4800 RPM | 1900 RPM |
| Engine Bore Size | 93 mm | 81 mm |
| Engine Stroke Size | 78 mm | 88 mm |
| Engine Compression Ratio | 10.5:1 | 17.3:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 245 km/hour | 230 km/hour |
| Acceleration 0-100mph | 7.4 seconds | 9.6 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1542 kg | 1870 kg |
| Vehicle Length | 4730 mm | 4910 mm |
| Vehicle Width | 1810 mm | 1870 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2710 mm | 2910 mm |
| Fuel Consumption Overall | 12.5 L/100km | 8.7 L/100km |
| Fuel Tank Capacity | 69 L | 72 L |
