2005 Alfa Romeo 166 vs. 1974 Citroen SM
To start off, 2005 Alfa Romeo 166 is newer by 31 year(s). Which means there will be less support and parts availability for 1974 Citroen SM. In addition, the cost of maintenance, including insurance, on 1974 Citroen SM would be higher. At 2,959 cc (6 cylinders), 2005 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2005 Alfa Romeo 166 (217 HP @ 6300 RPM) has 47 more horse power than 1974 Citroen SM. (170 HP @ 5500 RPM). In normal driving conditions, 2005 Alfa Romeo 166 should accelerate faster than 1974 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alfa Romeo 166 weights approximately 135 kg more than 1974 Citroen SM. 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, 2005 Alfa Romeo 166 (265 Nm @ 5000 RPM) has 28 more torque (in Nm) than 1974 Citroen SM. (237 Nm @ 4000 RPM). This means 2005 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 1974 Citroen SM.
Compare all specifications:
| 2005 Alfa Romeo 166 | 1974 Citroen SM | |
| Make | Alfa Romeo | Citroen |
| Model | 166 | SM |
| Year Released | 2005 | 1974 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 2670 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 217 HP | 170 HP |
| Engine RPM | 6300 RPM | 5500 RPM |
| Torque | 265 Nm | 237 Nm |
| Torque RPM | 5000 RPM | 4000 RPM |
| Engine Bore Size | 93 mm | 87.1 mm |
| Engine Stroke Size | 72.6 mm | 75 mm |
| Engine Compression Ratio | 10.0:1 | 9.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1585 kg | 1450 kg |
| Vehicle Length | 4730 mm | 4900 mm |
| Vehicle Width | 1810 mm | 1850 mm |
| Vehicle Height | 1420 mm | 1330 mm |
| Wheelbase Size | 2710 mm | 2960 mm |
| Fuel Tank Capacity | 72 L | 25 L |
