2007 Alfa Romeo Spider vs. 1974 Citroen SM
To start off, 2007 Alfa Romeo Spider is newer by 33 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, 2007 Alfa Romeo Spider (197 HP @ 4000 RPM) has 27 more horse power than 1974 Citroen SM. (170 HP @ 5500 RPM). In normal driving conditions, 2007 Alfa Romeo Spider should accelerate faster than 1974 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 2007 Alfa Romeo Spider weights approximately 285 kg more than 1974 Citroen SM. 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, 2007 Alfa Romeo Spider (400 Nm @ 2000 RPM) has 163 more torque (in Nm) than 1974 Citroen SM. (237 Nm @ 4000 RPM). This means 2007 Alfa Romeo Spider will have an easier job in driving up hills or pulling heavy equipment than 1974 Citroen SM.
Compare all specifications:
| 2007 Alfa Romeo Spider | 1974 Citroen SM | |
| Make | Alfa Romeo | Citroen |
| Model | Spider | SM |
| Year Released | 2007 | 1974 |
| Body Type | Roadster | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2386 cc | 2670 cc |
| Engine Cylinders | 5 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 197 HP | 170 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 400 Nm | 237 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 82 mm | 87.1 mm |
| Engine Stroke Size | 90.4 mm | 75 mm |
| Engine Compression Ratio | 17.0:1 | 9.0:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1735 kg | 1450 kg |
| Vehicle Length | 4440 mm | 4900 mm |
| Vehicle Width | 1840 mm | 1850 mm |
| Vehicle Height | 1380 mm | 1330 mm |
| Wheelbase Size | 2530 mm | 2960 mm |
| Fuel Tank Capacity | 70 L | 25 L |
