Hi @ngunyeimproved. Sorry to here you've had this issue.Hi all, I know this is an A35 forum but my GLB 35 also needs new cylinder heads. Check engine light, lots of vibrations at idle and a cylinder 2 misfire when scanner was plugged in. After being towed to the dealer and a couple tests later (and 3 weeks later); they have ordered a new cylinder head from germany. I'm in Australia so wait time is up to 8 weeks... FML
What's the age and mileage of your car and did MB admit it was a warranty issue straight away?