However, after Audi started entering Mikkola and the new four-wheel-drive Quattro in rallies for testing purposes with immediate success, other manufacturers started their all-wheel-drive projects.
Con todo, despois de que Audi comezara a correr con Mikkola no novo Quattro de catro rodas motrices con éxito inmediato, outros fabricantes comezaron proxectos de tracción total.