As of this morning my rear windshield wipers stopped working. I just bought the car this year and it is still covered by my three year warranty. I called the Mini dealership and they said that they can fix it on Monday. However in the past they've told me that for safety issues they would give me a rental the same day.
I personally see it as a safety issue. I'm trying to find a Massachusetts law that says real windshield wipers specifically but I don't think one exists. This question led me to this law that says "Windshield wipers must work as originally designed." Then goes on to site a 2 blade example, but I think that is mostly an artifact of the time it was written, and not to mean 'only in the case of 2 blades.'
Is a possible rear window obstruction a safety issue or am I being overly cautious?