1973 Citroen SM vs. 1984 Lancia Thema
To start off, 1984 Lancia Thema is newer by 11 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, 1973 Citroen SM (171 HP @ 5500 RPM) has 8 more horse power than 1984 Lancia Thema. (163 HP @ 5500 RPM). In normal driving conditions, 1973 Citroen SM should accelerate faster than 1984 Lancia Thema. With that said, vehicle weight also plays an important factor in acceleration. 1973 Citroen SM weights approximately 300 kg more than 1984 Lancia Thema. 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, 1984 Lancia Thema (290 Nm @ 2750 RPM) has 53 more torque (in Nm) than 1973 Citroen SM. (237 Nm @ 4000 RPM). This means 1984 Lancia Thema will have an easier job in driving up hills or pulling heavy equipment than 1973 Citroen SM.
Compare all specifications:
| 1973 Citroen SM | 1984 Lancia Thema | |
| Make | Citroen | Lancia |
| Model | SM | Thema |
| Year Released | 1973 | 1984 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 1994 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 171 HP | 163 HP |
| Engine RPM | 5500 RPM | 5500 RPM |
| Torque | 237 Nm | 290 Nm |
| Torque RPM | 4000 RPM | 2750 RPM |
| Engine Bore Size | 87 mm | 84 mm |
| Engine Stroke Size | 75 mm | 90 mm |
| Engine Compression Ratio | 9.0:1 | 8.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1450 kg | 1150 kg |
| Vehicle Length | 4900 mm | 4600 mm |
| Vehicle Width | 1850 mm | 1760 mm |
| Vehicle Height | 1330 mm | 1440 mm |
| Wheelbase Size | 2960 mm | 2670 mm |
| Fuel Tank Capacity | 25 L | 65 L |
