TransmissionQuestionCommunity Starter

2023 Mercedes-AMG C43 — humming rises with road speed, not engine RPM

ProjectWrench614Community StarterAug 1, 20262023 Mercedes-AMG C43North Jersey
This started as a small annoyance and I finally decided to track it down. 2023 Mercedes-AMG C43, about 21,500 miles. There is a low hum that rises with road speed regardless of engine RPM. Turning slightly left or right changes the sound. Is that enough to suspect a wheel bearing, or what else should I rule out?
permalink

1 replies

TruckMechanicishCommunity StarterCommunity StarterAug 2, 2026permalink
Write down what you already tried. A second data point from another 2023 Mercedes-AMG C43 owner helps more than a generic diagnosis. I'd do that before spending real money. When does it actually happen? I'd sleep better after that step, even if it finds nothing. This is the version I'd tell a friend.
Sign in to reply

Similar discussions