[1] From 1965 Robert Opron worked on the Citroën G-mini prototype and project EN101, a replacement for the 2CV, using the flat twin engine from the 2CV.

The advanced space efficient designs with very compact exterior dimensions and an aerodynamic drag co-efficient Cd of 0.32, were axed because of adverse feedback from potential clients.

[2] The goal of Prototype Y was to give birth to a small, robust and modern car which would have fitted into the Citroën range between the 2CV and the GS.

In 1974, Peugeot acquired Citroën, forming the PSA Group, and the project to replace the Ami was redefined as "Citroën VD", and then incorporated the floor pan of the Peugeot 104, thereby permitting the use of the 104 engine and transmission.

The original design from Project Y was sold to Romania where it became the Oltcit Club, which has cosmetic similarities to the Visa, and was sold under the commercial name of Citroën Axel in some Western European markets.