Why Germany no longer exports used cars overseas?

Why Germany no longer exports used cars overseas (especially since 1990s)

There is a image of car from the best years of overseas exports of used cars from Germany, back in 1970s:
Update: Why these ports like Bremerhaven or Rotterdam doesn't exports used cars overseas via Ro-Ro ships?

Used or second-hand cars from Germany, unfortunately, are not famous all over the world...
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