1973 Citroen SM vs. 2007 Porsche 911
To start off, 2007 Porsche 911 is newer by 34 year(s). Which means there will be less support and parts availability for 1973 Citroen SM. In addition, the cost of maintenance, including insurance, on 1973 Citroen SM would be higher. At 3,824 cc (6 cylinders), 2007 Porsche 911 is equipped with a bigger engine. In terms of performance, 2007 Porsche 911 (350 HP) has 170 more horse power than 1973 Citroen SM. (180 HP) In normal driving conditions, 2007 Porsche 911 should accelerate faster than 1973 Citroen SM.
Because 2007 Porsche 911 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2007 Porsche 911. However, in wet, icy, snow, or gravel driving conditions, 1973 Citroen SM, being front wheel drive (FWD), will offer much better control with better grip. 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 Porsche 911 (400 Nm) has 167 more torque (in Nm) than 1973 Citroen SM. (233 Nm). This means 2007 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1973 Citroen SM.
Compare all specifications:
| 1973 Citroen SM | 2007 Porsche 911 | |
| Make | Citroen | Porsche |
| Model | SM | 911 |
| Year Released | 1973 | 2007 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 2670 cc | 3824 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 180 HP | 350 HP |
| Torque | 233 Nm | 400 Nm |
| Engine Bore Size | 86.9 mm | 99 mm |
| Engine Stroke Size | 74.9 mm | 82.8 mm |
| Engine Compression Ratio | 9.0:1 | 11.8:1 |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Length | 4920 mm | 4430 mm |
| Vehicle Width | 1840 mm | 1810 mm |
| Vehicle Height | 1330 mm | 1310 mm |
| Wheelbase Size | 2960 mm | 2360 mm |
