This is the result of an opinion poll by Automobile Consulting International (ACI), in which 500 dealers took part.
More than half of those questioned gave marks between four and six (six being the worst mark possible) when asked about Mitsubishi Motors' future in Germany.
Only 62 participating Mitsubishi partners believe that they have a future with the brand, while 223 feel that their future is uncertain.
"Dealers' loyalty to their manufacturer will suffer," said Tilman Veltjens, ACI managing director.
Mitsubishi Motors Europe downplays the situation, insisting that the brand's future is secure.
Officials said that business is going better than during the past four years and so far not a single dealer has handed in his notice.