1991 Audi 80 vs. 1972 Citroen SM
To start off, 1991 Audi 80 is newer by 19 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 2,669 cc (6 cylinders), 1972 Citroen SM is equipped with a bigger engine. In terms of performance, 1972 Citroen SM (173 HP @ 5500 RPM) has 85 more horse power than 1991 Audi 80. (88 HP @ 4000 RPM) In normal driving conditions, 1972 Citroen SM should accelerate faster than 1991 Audi 80. With that said, vehicle weight also plays an important factor in acceleration. 1972 Citroen SM weights approximately 140 kg more than 1991 Audi 80. 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, 1972 Citroen SM (237 Nm @ 4000 RPM) has 55 more torque (in Nm) than 1991 Audi 80. (182 Nm @ 2300 RPM). This means 1972 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi 80.
Compare all specifications:
| 1991 Audi 80 | 1972 Citroen SM | |
| Make | Audi | Citroen |
| Model | 80 | SM |
| Year Released | 1991 | 1972 |
| Engine Position | Front | Front |
| Engine Size | 1896 cc | 2669 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 88 HP | 173 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 182 Nm | 237 Nm |
| Torque RPM | 2300 RPM | 4000 RPM |
| Engine Bore Size | 79.6 mm | 87 mm |
| Engine Stroke Size | 95.5 mm | 75 mm |
| Engine Compression Ratio | 21.0:1 | 9.0:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1310 kg | 1450 kg |
| Vehicle Length | 4490 mm | 4900 mm |
| Vehicle Width | 1700 mm | 1850 mm |
| Vehicle Height | 1410 mm | 1330 mm |
| Wheelbase Size | 2620 mm | 2960 mm |
| Fuel Tank Capacity | 65 L | 25 L |
