[After you get the car back from the dealer, drive it on an open highway at full speed for a while (5 minutes?).

Please don't do this on US roads. There is absolutely no reason to drive fast to check brakes. If you are worried about dragging a good drive through the neighborhood with a bunch of stop and go is the test. Driving fast without applying the brakes won't test much other than your driving skill and recklessness.

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Steve Brotherton
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician