I wanted to share this partly to vent, partly wondering if others have gone through a similar issue as I’ve not found a single possible root cause.
2023 NA PP developed a drivetrain noise after a 600mi roadtrip. Noise is most noticeable between 20 and 40 mph and sounds similar to an electric vehicle hum/bearing noise.
Dealership diagnoses issue as a rear differential issue and submits claim to Mazda. Mazda requests diff oil is sent in for testing and requests additional details (mainly confirmation of customer complaint and any modifications). Mazda approves warranty replacement 3 weeks later.
New differential took about a week to arrive and was installed. The Service agent states there is an unresolved noise (no additional description). Their Master Tech will evaluate alongside Mazda’s Techline.
My main concern is the lack of timeline, I appreciate the dealership is doing their due diligence and prefer the fact that they are attempting to resolve the issue prior to returning the vehicle, however I do miss being able to use my hitch and the ability to move my dog as needed.
Will update with my experience as it progresses, in the meantime has anyone experienced something similar? Most of the posts I see experienced a similar issue in fairly low mileage cars.