The Spanish phrase "subasta de autos chocados" means "salvaged cars for sale" in English. This phrase is often seen on websites for Spanish-language used car dealers.
The word "subasta" is literally translated as "auction." Thus depending on the context, "subasta de autos chocados" could refer to an online auction, or a set-price sale. The Spanish word "chocado" literally means "to crash" or "to collide." In the context of cars, it refers to cars that have been in accidents. Therefore a sale of "autos chocados" indicates that the cars are not simply used, but that they have been salvaged from crashes.