2009 Audi A6 vs. 1972 Citroen SM
To start off, 2009 Audi A6 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 2,698 cc (6 cylinders), 2009 Audi A6 is equipped with a bigger engine. In terms of performance, 1972 Citroen SM (180 HP) has 2 more horse power than 2009 Audi A6. (178 HP) In normal driving conditions, 1972 Citroen SM should accelerate faster than 2009 Audi A6.
Because 2009 Audi A6 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 Audi A6 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 Audi A6 (380 Nm) has 149 more torque (in Nm) than 1972 Citroen SM. (231 Nm). This means 2009 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 1972 Citroen SM.
Compare all specifications:
| 2009 Audi A6 | 1972 Citroen SM | |
| Make | Audi | Citroen |
| Model | A6 | SM |
| Year Released | 2009 | 1972 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2698 cc | 2668 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 178 HP | 180 HP |
| Torque | 380 Nm | 231 Nm |
| Engine Bore Size | 83 mm | 86.9 mm |
| Engine Stroke Size | 83.1 mm | 74.9 mm |
| Engine Compression Ratio | 17.0:1 | 9.0:1 |
| Top Speed | 228 km/hour | 218 km/hour |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 4920 mm | 4920 mm |
| Vehicle Width | 1860 mm | 1840 mm |
| Vehicle Height | 1470 mm | 1330 mm |
| Wheelbase Size | 2850 mm | 2960 mm |
