1971 Citroen SM vs. 2011 Mercedes-Benz A
To start off, 2011 Mercedes-Benz A is newer by 40 year(s). Which means there will be less support and parts availability for 1971 Citroen SM. In addition, the cost of maintenance, including insurance, on 1971 Citroen SM would be higher. At 2,670 cc (6 cylinders), 1971 Citroen SM is equipped with a bigger engine. In terms of performance, 1971 Citroen SM (158 HP @ 5500 RPM) has 50 more horse power than 2011 Mercedes-Benz A. (108 HP @ 4200 RPM). In normal driving conditions, 1971 Citroen SM should accelerate faster than 2011 Mercedes-Benz A. With that said, vehicle weight also plays an important factor in acceleration. 2011 Mercedes-Benz A weights approximately 1380 kg more than 1971 Citroen SM.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2011 Mercedes-Benz A (250 Nm @ 1600 RPM) has 15 more torque (in Nm) than 1971 Citroen SM. (235 Nm @ 4000 RPM). This means 2011 Mercedes-Benz A will have an easier job in driving up hills or pulling heavy equipment than 1971 Citroen SM.
Compare all specifications:
| 1971 Citroen SM | 2011 Mercedes-Benz A | |
| Make | Citroen | Mercedes-Benz |
| Model | SM | A |
| Year Released | 1971 | 2011 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 1991 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 158 HP | 108 HP |
| Engine RPM | 5500 RPM | 4200 RPM |
| Torque | 235 Nm | 250 Nm |
| Torque RPM | 4000 RPM | 1600 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1450 kg | 2830 kg |
| Vehicle Length | 4900 mm | 3840 mm |
| Vehicle Width | 1850 mm | 1770 mm |
| Vehicle Height | 1330 mm | 1600 mm |
| Wheelbase Size | 2950 mm | 2570 mm |
| Fuel Tank Capacity | 89 L | 60 L |
