1973 Citroen SM vs. 2006 BMW 525
To start off, 2006 BMW 525 is newer by 33 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 2,670 cc (6 cylinders), 1973 Citroen SM is equipped with a bigger engine. In terms of performance, 2006 BMW 525 (175 HP @ 4000 RPM) has 4 more horse power than 1973 Citroen SM. (171 HP @ 5500 RPM) In normal driving conditions, 2006 BMW 525 should accelerate faster than 1973 Citroen SM.
Because 2006 BMW 525 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 2006 BMW 525. 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, 2006 BMW 525 (400 Nm @ 2000 RPM) has 163 more torque (in Nm) than 1973 Citroen SM. (237 Nm @ 4000 RPM). This means 2006 BMW 525 will have an easier job in driving up hills or pulling heavy equipment than 1973 Citroen SM.
Compare all specifications:
| 1973 Citroen SM | 2006 BMW 525 | |
| Make | Citroen | BMW |
| Model | SM | 525 |
| Year Released | 1973 | 2006 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 171 HP | 175 HP |
| Engine RPM | 5500 RPM | 4000 RPM |
| Torque | 237 Nm | 400 Nm |
| Torque RPM | 4000 RPM | 2000 RPM |
| Engine Compression Ratio | 9.0:1 | 17.0:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4900 mm | 4850 mm |
| Vehicle Width | 1850 mm | 1850 mm |
| Vehicle Height | 1330 mm | 1500 mm |
| Wheelbase Size | 2960 mm | 2730 mm |
| Fuel Tank Capacity | 25 L | 70 L |
