Kango

No idea but guessing if you have a UK registered one that has passed an IVA test so built to a recognised standard it may help also having a long wheel base on a standard vw pan would also help. From my understanding the french authorities do not like modified cars. May be worth looking on french hot rod sites for any info there. You could buy a french buggy then put a new body shell on it so the mechanical parts are stil the same and registered.