1. Mazda LaPuta (in spanish: "the whore")
The car's name actually derivates from the book Gulliver's Travels by Jonathan Swift, but go explain this to spanish speakers. For them, it means "the whore".
2. Mitsubishi Pajero (in spanish: "wanker")
The Spanish version ended up as "Montero", but still many spanish-speaking customer do have a wanker.
3. Nissan Moco (in spanish: "booger")
It was only marketed in Japan as such; otherwise it would have been a bad (nose) pick for spanish speakers.
4. Buick LaCrosse (in French: "masturbating teenagers")
When Buick launched the "LaCrosse" in Canada why couldn't it have come across as "the fancy pen on wheels," or something to do with archery? Nope, in French-speaking Quebec, the meaning is, of course, masturbating teenagers.
5. Chevrolet Nova (in spanish: "It Doesn't Go")
General Motors had a very famous fiasco in trying to market the Nova car in Central and South America. "No va" in Spanish means, "It Doesn't Go".
6. Opel Ascona (in Spain and Portugal: "female genitalia")
Why couldn't the "Opel Ascona" mean "little flower" or "cute worm," which would have been cause for just mild embarrassment? Instead, it means female genitalia in Northern Spain and parts of Portugal.
7. Honda Fitta (in swedish and norwegian: "cunt")
So why can only spanish speakers have genitalic cars? Here's one for up there: the Honda "cunt"
8. Daihatsu Charade
It's not really a car, it's just pretending! This was one of those econo-boxes that was not merely humiliating to drive, it embarrassed its owner each time its name was uttered. "I drive a Charade." Good-bye, prom date!
9. Dodge Swinger
You'll also find ads for these on the back pages of adult magazines. Okay, it was the '70s, but still - why not just call it the STD?
10. AMC Gremlin
Do you really want to own a car named after annoying small problems that are next-to-impossible to fix? Courtesy of the same folks who brought you the Pacer.
Source: http://weirdynews.blogspot.com/2008/09/10-most-unfortunate-car-names.html