Here is a great article by Kris De Decker (edited by Vincent Grosjean) that appeared in Low Tech Magazine, advocating for the attributes of the 2CV to be applied to cars we are driving today.
Kris compares it with Citroën’s own C1. In spite of all the high-tech that has been squeezed into cars since then, the 2CV from 1949 is still more energy efficient than the company’s current-petrol powered econo offering.
Read the article here: The Citroen 2CV: cleantech from the 1940s
Maybe not being able to match the efficiency of the 2CV is one of the compelling reasons Citroën and others have now set their sights on electrification of all their vehicles. Even so, as Kris points out, electronics push up energy consumption because they raise the weight of the car and because they consume energy themselves (electricity which is delivered by the combustion engine). If we really want more energy efficient cars, the 2CV shows us that we need not more, but less technology.
We’ll add that for safer driving less distraction from electronic such as display screens and numerous controls, like the 2CV offers, is a virtue!