English doesn't use genders for brand names and such, but in general Japanese cars are not feminine, they're neutral (analogous to "it" in English I suppose). This is entirely appropriate, because they are in general unremarkable. Alfa, Lancia, et al., feminine, whereas "mama" FIAT neutral despite owning the others; likewise Ford neutral whereas Chevrolet feminine (probably because of the French background to the name itself). Lola is feminine, Lexus neutral (the Japan thing at play). Porsche feminine, Opel neutral and so on.
My first Toyota was "The Antichrist."