By 1988, de Villota had retired from International racing, although he still won three Spanish Porsche Carrera Cup Championships in four years (1993, 1995 and 1996) at national level.
En 1988, de Villota retirouse das carreiras internacionais, aínda que aínda gañou tres campionatos españois da Porsche Carrera Cup en catro anos (1993, 1995 e 1996) a nivel nacional.