1972 Citroen SM vs. 2004 Opel Astra
To start off, 2004 Opel Astra is newer by 32 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 88 more horse power than 2004 Opel Astra. (85 HP @ 5400 RPM). In normal driving conditions, 1972 Citroen SM should accelerate faster than 2004 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1972 Citroen SM weights approximately 135 kg more than 2004 Opel Astra. 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 98 more torque (in Nm) than 2004 Opel Astra. (139 Nm @ 2600 RPM). This means 1972 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Astra.
Compare all specifications:
| 1972 Citroen SM | 2004 Opel Astra | |
| Make | Citroen | Opel |
| Model | SM | Astra |
| Year Released | 1972 | 2004 |
| Body Type | Coupe | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2669 cc | 1598 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 173 HP | 85 HP |
| Engine RPM | 5500 RPM | 5400 RPM |
| Torque | 237 Nm | 139 Nm |
| Torque RPM | 4000 RPM | 2600 RPM |
| Engine Bore Size | 87 mm | 79 mm |
| Engine Stroke Size | 75 mm | 81.5 mm |
| Drive Type | Front | Front |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1450 kg | 1315 kg |
| Vehicle Length | 4900 mm | 4290 mm |
| Vehicle Width | 1850 mm | 1720 mm |
| Vehicle Height | 1330 mm | 1470 mm |
| Wheelbase Size | 2960 mm | 2610 mm |
| Fuel Tank Capacity | 25 L | 52 L |
