The question of whether or not Carlos Sainz is Catholic is a personal one. There is no definitive answer, and it is ultimately up to Sainz to decide whether or not he wants to share his religious beliefs with the public.
However, the evidence suggests that Sainz may be Catholic. He has been seen wearing a cross necklace on several occasions, and he has made references to God in interviews. Additionally, he was raised in a Catholic country and is likely to have been influenced by the Catholic culture and values of his home country.
Ultimately, it is important to respect Sainz's privacy and to allow him to decide whether or not he wants to share his religious beliefs with the public.
