2009 BMW X6 vs. 1972 Citroen SM
To start off, 2009 BMW X6 is newer by 37 year(s). Which means there will be less support and parts availability for 1972 Citroen SM. In addition, the cost of maintenance, including insurance, on 1972 Citroen SM would be higher. At 2,977 cc (6 cylinders), 2009 BMW X6 is equipped with a bigger engine. In terms of performance, 2009 BMW X6 (300 HP) has 120 more horse power than 1972 Citroen SM. (180 HP). In normal driving conditions, 2009 BMW X6 should accelerate faster than 1972 Citroen SM.
Because 2009 BMW X6 is four wheel drive (4WD), it will have significant more traction and grip than 1972 Citroen SM. In wet, icy, snow, or gravel driving conditions, 2009 BMW X6 will offer significantly more control. 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 BMW X6 (407 Nm) has 176 more torque (in Nm) than 1972 Citroen SM. (231 Nm). This means 2009 BMW X6 will have an easier job in driving up hills or pulling heavy equipment than 1972 Citroen SM. 2009 BMW X6 has automatic transmission and 1972 Citroen SM has manual transmission. 1972 Citroen SM will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW X6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 BMW X6 | 1972 Citroen SM | |
| Make | BMW | Citroen |
| Model | X6 | SM |
| Year Released | 2009 | 1972 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2977 cc | 2668 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 300 HP | 180 HP |
| Torque | 407 Nm | 231 Nm |
| Engine Bore Size | 84 mm | 86.9 mm |
| Engine Stroke Size | 89.6 mm | 74.9 mm |
| Engine Compression Ratio | 10.2:1 | 9.0:1 |
| Top Speed | 240 km/hour | 218 km/hour |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Length | 4880 mm | 4920 mm |
| Vehicle Width | 1990 mm | 1840 mm |
| Vehicle Height | 1700 mm | 1330 mm |
| Wheelbase Size | 2940 mm | 2960 mm |
