1971 Citroen SM vs. 1990 Opel Lotus Omega
To start off, 1990 Opel Lotus Omega is newer by 19 year(s). Which means there will be less support and parts availability for 1971 Citroen SM. In addition, the cost of maintenance, including insurance, on 1971 Citroen SM would be higher. At 3,615 cc (6 cylinders), 1990 Opel Lotus Omega is equipped with a bigger engine. In terms of performance, 1990 Opel Lotus Omega (377 HP @ 5200 RPM) has 219 more horse power than 1971 Citroen SM. (158 HP @ 5500 RPM) In normal driving conditions, 1990 Opel Lotus Omega should accelerate faster than 1971 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 1990 Opel Lotus Omega weights approximately 213 kg more than 1971 Citroen SM. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1990 Opel Lotus Omega is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1990 Opel Lotus Omega. However, in wet, icy, snow, or gravel driving conditions, 1971 Citroen SM, being front wheel drive (FWD), will offer much better control with better grip. 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, 1990 Opel Lotus Omega (568 Nm @ 4200 RPM) has 333 more torque (in Nm) than 1971 Citroen SM. (235 Nm @ 4000 RPM). This means 1990 Opel Lotus Omega will have an easier job in driving up hills or pulling heavy equipment than 1971 Citroen SM.
Compare all specifications:
| 1971 Citroen SM | 1990 Opel Lotus Omega | |
| Make | Citroen | Opel |
| Model | SM | Lotus Omega |
| Year Released | 1971 | 1990 |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 3615 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 158 HP | 377 HP |
| Engine RPM | 5500 RPM | 5200 RPM |
| Torque | 235 Nm | 568 Nm |
| Torque RPM | 4000 RPM | 4200 RPM |
| Engine Bore Size | 87 mm | 95 mm |
| Engine Stroke Size | 75 mm | 85 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1450 kg | 1663 kg |
| Vehicle Length | 4900 mm | 4690 mm |
| Vehicle Width | 1850 mm | 1940 mm |
| Vehicle Height | 1330 mm | 1440 mm |
| Wheelbase Size | 2950 mm | 2740 mm |
| Fuel Tank Capacity | 89 L | 75 L |
