2008 Audi A4 vs. 1971 Citroen SM
To start off, 2008 Audi A4 is newer by 37 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 30 more horse power than 2008 Audi A4. (128 HP @ 5700 RPM) In normal driving conditions, 1971 Citroen SM should accelerate faster than 2008 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 1971 Citroen SM weights approximately 85 kg more than 2008 Audi A4. 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, 1971 Citroen SM (235 Nm @ 4000 RPM) has 40 more torque (in Nm) than 2008 Audi A4. (195 Nm @ 3300 RPM). This means 1971 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A4.
Compare all specifications:
| 2008 Audi A4 | 1971 Citroen SM | |
| Make | Audi | Citroen |
| Model | A4 | SM |
| Year Released | 2008 | 1971 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1983 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 128 HP | 158 HP |
| Engine RPM | 5700 RPM | 5500 RPM |
| Torque | 195 Nm | 235 Nm |
| Torque RPM | 3300 RPM | 4000 RPM |
| Engine Bore Size | 82.5 mm | 87 mm |
| Engine Stroke Size | 92.8 mm | 75 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1365 kg | 1450 kg |
| Vehicle Length | 4550 mm | 4900 mm |
| Vehicle Width | 1780 mm | 1850 mm |
| Vehicle Height | 1430 mm | 1330 mm |
| Wheelbase Size | 2660 mm | 2950 mm |
| Fuel Tank Capacity | 70 L | 89 L |
