2016 M6 Gran Coupe trunk thump noise question
Looking for sleuthing help. I have a 2016 M6 Gran Coupe, 6 speed, with only about 26K. Have noticed a “thump” sounding coming from the trunk area, …. like something is sliding, upon going from a stop, up an incline. Sometimes, same kind of sliding “thump” upon braking or upon quicker acceleration. Have emptied trunk and do not see anything loose. I totally baby this car, always garages, pampered, etc. any ideas?
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