When visiting Toulouse, the easiest way is to park in one of the many city centre car parks. There are about fifteen paid parking downtown, some open 24/24 (Capitole, Carmes, Compans-Caffarelli, Victor Hugo): http://www.vincipark.com/ or http://www.parkopedia.fr/

You may also park your car in one of the free underground station car parks at the Basso Cambo, Arènes, Jolimont, Argoulets and Balma Gramont stations. These are reserved for users who have a bus or underground ticket validated within a connection time of 60 minutes.