Jean Renoir actually made three versions of this film simultaneously, with dialogue in English, French and Italian respectively. He claimed he liked the English-language version best --- it was the only one to be restored in 2012.
François Truffaut admired this film so much, he named his own production company (Les Films Du Carrosse) after it. He also reportedly referred to The Golden Coach (1952) as "the noblest and most refined film ever made."
Director Luchino Visconti and his regular scenarist Suso Cecchi D'Amico worked on an earlier draft adaptation of the Prosper Mérimée story as a vehicle for Anna Magnani, but there was no funding and their production was canceled.