1973 Citroen SM vs. 2008 Opel Astra
To start off, 2008 Opel Astra is newer by 35 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, 2008 Opel Astra (237 HP) has 57 more horse power than 1973 Citroen SM. (180 HP) In normal driving conditions, 2008 Opel Astra should accelerate faster 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, 2008 Opel Astra (320 Nm) has 87 more torque (in Nm) than 1973 Citroen SM. (233 Nm). This means 2008 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 1973 Citroen SM.
Compare all specifications:
| 1973 Citroen SM | 2008 Opel Astra | |
| Make | Citroen | Opel |
| Model | SM | Astra |
| Year Released | 1973 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 180 HP | 237 HP |
| Torque | 233 Nm | 320 Nm |
| Engine Bore Size | 86.9 mm | 86 mm |
| Engine Stroke Size | 74.9 mm | 86 mm |
| Engine Compression Ratio | 9.0:1 | 8.8:1 |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Length | 4920 mm | 4300 mm |
| Vehicle Width | 1840 mm | 1760 mm |
| Vehicle Height | 1330 mm | 1410 mm |
| Wheelbase Size | 2960 mm | 2620 mm |
