2009 Audi S4 vs. 1973 Citroen SM
To start off, 2009 Audi S4 is newer by 36 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 4,161 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 6800 RPM) has 163 more horse power than 1973 Citroen SM. (177 HP @ 6500 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 1973 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 1973 Citroen SM weights approximately 550 kg more than 2009 Audi S4.
Because 2009 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 1973 Citroen SM. In wet, icy, snow, or gravel driving conditions, 2009 Audi S4 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.
Compare all specifications:
| 2009 Audi S4 | 1973 Citroen SM | |
| Make | Audi | Citroen |
| Model | S4 | SM |
| Year Released | 2009 | 1973 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 2965 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 177 HP |
| Engine RPM | 6800 RPM | 6500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 930 kg | 1480 kg |
| Vehicle Length | 4580 mm | 4900 mm |
| Vehicle Width | 1780 mm | 1850 mm |
| Vehicle Height | 1400 mm | 1330 mm |
| Wheelbase Size | 2660 mm | 2960 mm |
