It is "das Auto" (neutrum)
but it is "der Wagen" (maskulinum)
Auto brand/make/model names are always "maskulinum" in German
(exception --> die Corvette, die Viper or die Cobra)
So for a German a Porsche Boxster/911/Cayman etc. will ALWAYS be "maskulinum".
Der Porsche.
Der Boxster.
