wseikow

I was sitting in the drivers seat staring at the RPM gauge , in C mode , idling , at operating temperature.

I notice RPM are steady at 600 rpm. I do occasionally feel something in my seat , form the engine. Rpm go up to 625 every 7 or eight seconds. Hard to describe.

I never noticed this before. Any ideas if this is normal etc??
To me it shouldn’t fluctuate at all.
I still have extended warranty and want to get this looked at.
Hoping for some feedback from the experts in this forum.

Kind thanks. MY 2016 E63s