1972 Citroen SM vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 35 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, 2007 Opel Astra (178 HP @ 5500 RPM) has 5 more horse power than 1972 Citroen SM. (173 HP @ 5500 RPM) In normal driving conditions, 2007 Opel Astra should accelerate faster than 1972 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 1972 Citroen SM weights approximately 65 kg more than 2007 Opel Astra.
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 7 more torque (in Nm) than 2007 Opel Astra. (230 Nm @ 1950 RPM). This means 1972 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra.
Compare all specifications:
| 1972 Citroen SM | 2007 Opel Astra | |
| Make | Citroen | Opel |
| Model | SM | Astra |
| Year Released | 1972 | 2007 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2669 cc | 1598 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 173 HP | 178 HP |
| Engine RPM | 5500 RPM | 5500 RPM |
| Torque | 237 Nm | 230 Nm |
| Torque RPM | 4000 RPM | 1950 RPM |
| Engine Compression Ratio | 9.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1450 kg | 1385 kg |
| Vehicle Length | 4900 mm | 4300 mm |
| Vehicle Width | 1850 mm | 1760 mm |
| Vehicle Height | 1330 mm | 1440 mm |
| Wheelbase Size | 2960 mm | 2620 mm |
| Fuel Tank Capacity | 25 L | 52 L |
