My engine is making sounds
The diesel sound is normal. Mine started making it after about 800 miles. There was a big thead on that here a while back. My 3.2 ML did that & even my ML500 now - standard Merc valvetrain stuff, I would guess . . .
At idle my engine has this sounds, my friend says its like a diesel engine sound. Also when you drive, can you hear the supercharger? Are you suppose to hear the supercharger? Is it normal for the ticking----diesel engine sound and being able to hear the supercharger spinning?


