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Is Your BMW Catalytic Converter Failing? 10 Warning Signs You Can’t Ignore

Is your BMW feeling sluggish, burning more gas, or setting off the check engine light? Catalytic converter failures sneak up on you—and ignoring them can lead to expensive repairs. In this video, we’ll cover the early warning signs: from mysterious codes (like P0420/P0430) and rotten egg smells, to overheat issues and falling fuel economy. Learn what causes these failures, how to spot the symptoms (like odd noises, smoke, or performance drops), and why a failing converter can trigger a chain reaction of costly problems. Plus, find out why scanning for codes early and consulting a BMW specialist could save you thousands. Don’t let a bad cat converter turn your BMW story into a financial nightmare!

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