A lot of factors go into my feeling that a car, if it were alive, would be masculine or feminine. I suppose that size does indeed matter -- the larger cars tend to be male, smaller feminine. Darker colors, male; lighter, female. Et cetera.

That said:
'75 4-dr. Ford Maverick -- midsize car, metallic green; female
'65 4-dr. Mercury Park Lane -- a car to dwarf the 126, white; male
'75 Volvo 164 -- compact, white; female (probably because it self-destructed on me)
'84 Ford Escort -- small, white; female (the girl you'd take to the prom only because her family and yours were friendly)
'89 Olds Cutlass coupe -- midsize, silver; male for some reason, despite the fact that my next car with the same body, the '94 Olds Cutlass coupe in gold, seemed female
'84 MB 280CE -- midsize, dark blue/palomino; female, but kind of tomboyish
'86 MB 420SEL -- big, dark grey; masculine in size and presence, but when I likened it to a German battleship, then it was "she"
'97 C230 -- small, smoke silver/parchment; female

Out of 9 cars, 5 seem to have a strong feminine presence, 2 were sort of confused, and only 2 were strongly male. Wonder what that says about me? (Probably that I need to lie down and talk to somebody. . . .)

__________________
* *
-- Paul W. (The Benzadmiral)
('03 Buick Park Avenue, charcoal/cream)
Formerly:
'97 C230, smoke silver/parchment; '86 420SEL, anthracite/light grey; '84 280CE (W123), dark blue/palomino