2005 Audi A6 vs. 1973 Citroen SM
To start off, 2005 Audi A6 is newer by 32 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 2,976 cc (6 cylinders), 2005 Audi A6 is equipped with a bigger engine. In terms of performance, 2005 Audi A6 (220 HP @ 6200 RPM) has 49 more horse power than 1973 Citroen SM. (171 HP @ 5500 RPM). In normal driving conditions, 2005 Audi A6 should accelerate faster than 1973 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A6 weights approximately 86 kg more than 1973 Citroen SM. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2005 Audi A6 (300 Nm @ 3200 RPM) has 63 more torque (in Nm) than 1973 Citroen SM. (237 Nm @ 4000 RPM). This means 2005 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 1973 Citroen SM.
Compare all specifications:
| 2005 Audi A6 | 1973 Citroen SM | |
| Make | Audi | Citroen |
| Model | A6 | SM |
| Year Released | 2005 | 1973 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2976 cc | 2670 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 220 HP | 171 HP |
| Engine RPM | 6200 RPM | 5500 RPM |
| Torque | 300 Nm | 237 Nm |
| Torque RPM | 3200 RPM | 4000 RPM |
| Engine Bore Size | 82.5 mm | 87 mm |
| Engine Stroke Size | 92.8 mm | 75 mm |
| Engine Compression Ratio | 11.0:1 | 9.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1536 kg | 1450 kg |
| Vehicle Length | 4800 mm | 4900 mm |
| Vehicle Width | 1820 mm | 1850 mm |
| Vehicle Height | 1460 mm | 1330 mm |
| Wheelbase Size | 2760 mm | 2960 mm |
| Fuel Tank Capacity | 70 L | 25 L |
