Just purchased a 03 E320 sedan at MB of Nashville. Never a sound or squeak during the test drive but once off the lot after a bit of driving the front right suspension started to squeak loudly. Put the car up on ramps once home and it seems as though the squeaking is coming from the top of the strut / upper control arm areas. I ask because I really don't want to start throwing parts at it in hopes of repairing it. What (if any) known issues do the struts, strut mounts, upper ball joints and upper control arms have on the W211? Not sure if any of these parts have been recently changed but the car has 113k miles on it.

As you can imagine, it is quite embarrassing for the wife since it is he new car.

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Andy in Marion, KY