Zinedine Zidane rested some first-team regulars, but a side containing Lucas Vazquez, Marcelo, Isco and Casemiro should still have been far too strong for their rivals.
Liverpool and Manchester City also made it six points out of a possible six in Europe this season, after Bayern needed a late Joshua Kimmich strike to claim a 2-1 win at Lokomotiv Moscow in Group A.