2008ml550_0104

You know the dealer looked at me like I was crazy when I said my 08ml550 (smells like bad cats smell). Said it was due to sulfur getting stuck in cats and then when I nail it that's when it just smells whole truck up. Well last night I went to go grab some milk and started it up before I left and went to smell exhaust and it smelled even before I left driveway. Wondering if anyone else has this prob with their Mercedes 550 motors and what they did to eliminate it? O2 sensors? Bad cats? Change gas stations?

Thx!

cloisaf

I have the same problem on my 07 ML350. Anyone have any ideas. I would love to figure this out.