1999 Audi A4 vs. 1974 Citroen SM
To start off, 1999 Audi A4 is newer by 25 year(s). Which means there will be less support and parts availability for 1974 Citroen SM. In addition, the cost of maintenance, including insurance, on 1974 Citroen SM would be higher. At 2,670 cc (6 cylinders), 1974 Citroen SM is equipped with a bigger engine. In terms of performance, 1974 Citroen SM (170 HP) has 20 more horse power than 1999 Audi A4. (150 HP) In normal driving conditions, 1974 Citroen SM should accelerate faster than 1999 Audi A4.
Because 1999 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1974 Citroen SM. In wet, icy, snow, or gravel driving conditions, 1999 Audi A4 will offer significantly more control. 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, 1974 Citroen SM (237 Nm) has 27 more torque (in Nm) than 1999 Audi A4. (210 Nm). This means 1974 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4.
Compare all specifications:
| 1999 Audi A4 | 1974 Citroen SM | |
| Make | Audi | Citroen |
| Model | A4 | SM |
| Year Released | 1999 | 1974 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1779 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 150 HP | 170 HP |
| Torque | 210 Nm | 237 Nm |
| Engine Bore Size | 81 mm | 87.1 mm |
| Engine Stroke Size | 86.4 mm | 75 mm |
| Engine Compression Ratio | 9.5:1 | 9.0:1 |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 4480 mm | 4900 mm |
| Vehicle Width | 1740 mm | 1850 mm |
| Vehicle Height | 1420 mm | 1330 mm |
| Wheelbase Size | 2610 mm | 2960 mm |
