File · BMW-N55-WASTEGATE

N55 wastegate rattle

Manufacturer

BMW

Years

2011–2017

Where people complain about this

Reddit reply — long

That sounds like the **N55 wastegate rattle** issue — it's a known defect on BMW 335i/435i/535i from 2011–2017.

N55 turbo wastegate actuators wear early, producing a loud rattle and eventual loss of boost. Replacement turbo $3K–$4K.

Source: BMW TSB and class-action complaints.

If you've taken it to the dealer 2+ times for the same thing, you might have a lemon-law case. I built a free tool that checks your specific car against active class actions and NHTSA records — defectfiles.com. Takes about 60 seconds, no signup. Worst case it tells you nothing's there.

Reddit reply — short

Sounds like the N55 wastegate rattle issue — well-documented defect on BMW 2011–2017, BMW TSB and class-action complaints. If your dealer's tried to fix it 2+ times you may have a case. Free 60-sec check at defectfiles.com.

Driving a BMW 335i? Run yours through the check.

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