Originally Posted by
onehundred80
The galvanic action is only a slight possibility, but stainless steel and aluminum are farther apart on the galvanic scale than carbon steel and aluminum.
Mercedes must have had a reason to use more expensive screws than they could have, I'm sure the money men trim all unnecessary cost where they can.
Probably had storage bins full of left over W140 fender liner bolts left over...
And someone somewhere laughing about the perplexing question of "why"...
