Upvote:-1
Best option in France is usually to go through collaborative renting platforms. The two mainstream ones are : - Drivy - Oui Car However ... even them ask you a minimum of 2 years permit : https://www.drivy.com/help/articles/ffffc5ffb4bf and https://www.ouicar.fr/info/conditions
So your best solution would be to find someone willing to take the risk through Leboncoin or ask people around.
Upvote:2
As mentioned in 2017, ADA does rent cars to drivers whose license is less than one year old.
As of january 2020, I couldn't find any mention of a maximum age of 25, neither on the information page (https://www.ada.fr/offre/location-jeune-conducteur.html) nor on the terms and conditions page (https://www.ada.fr/conditions/location.html).
They do have an office in Caen (https://www.ada.fr/location-voiture-caen.html).
(I have no affiliation with ADA and actually never used that service).