2001 Audi A6 vs. 1973 Citroen SM
To start off, 2001 Audi A6 is newer by 28 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, 1973 Citroen SM (171 HP @ 5500 RPM) has 42 more horse power than 2001 Audi A6. (129 HP @ 4000 RPM) In normal driving conditions, 1973 Citroen SM should accelerate faster than 2001 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2001 Audi A6 weights approximately 30 kg more than 1973 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, 2001 Audi A6 (285 Nm @ 1750 RPM) has 48 more torque (in Nm) than 1973 Citroen SM. (237 Nm @ 4000 RPM). This means 2001 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 1973 Citroen SM.
Compare all specifications:
| 2001 Audi A6 | 1973 Citroen SM | |
| Make | Audi | Citroen |
| Model | A6 | SM |
| Year Released | 2001 | 1973 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1896 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 129 HP | 171 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 285 Nm | 237 Nm |
| Torque RPM | 1750 RPM | 4000 RPM |
| Engine Bore Size | 79.5 mm | 87 mm |
| Engine Stroke Size | 95.5 mm | 75 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1480 kg | 1450 kg |
| Vehicle Length | 4800 mm | 4900 mm |
| Vehicle Width | 1820 mm | 1850 mm |
| Vehicle Height | 1460 mm | 1330 mm |
| Wheelbase Size | 2770 mm | 2960 mm |
| Fuel Tank Capacity | 70 L | 25 L |
