2019 Porsche Macan SUV AWD

Car intermittently reverses in drive while coming out of park (on flat surfaces). Provided videos of incidents to Porsche but they have not been able to identify the issue. This has almost caused an accident. Two people were standing behind my car when I put the car in drive but it reversed. Dealer has investigated (very cursory) on multiple occasions now based on the video evidence but has been unable to replicate the issue (since it’s intermittent) and therefore will not take action. (I can provide videos but there is no option to do so on this upload). Incident date below is most recent incident.

THE SMALL PORTABLE AIR PUMP THAT CAME WITH THE CAR WOULD BLOW THE FUSE TO THE CIGARETTE 12 V OUTLET ON ABOUT EVERY THIRD OR FOURTH USE. THIS WOULD HAPPEN EACH TIME AFTER YOU PUT IN A NEW 20AMP FUSE. I CAN'T TELL WHETHER THIS IS CAUSED BY THE AIR PUMP OR THE CIRCUITRY ON THE CAR. I HAVE GONE THROUGH FIVE FUSES ALREADY.

THE ISSUE IS THE SQUEAKING OF THE REAR BRAKES WHEN BACKING UP. THE WOULD HAPPEN WHEN THE CAR HAD BEEN DRIVEN. THIS HAPPENS IN COLD OR HOT WEATHER. A FACTORY DEALERSHIP HAD LOOK AT THE ISSUE BUT FOUND NOTHING. THIS PROBLEM STARTED WHEN THE CAR WAS ABOUT TWO TO THREE MONTHS OLD. I ALSO HAVE A 2020 AUDI Q7, AND IT HAS ALMOST THE SAME ISSUE WHEN BACKING UP. HOWEVER, IT DOES MORE IN THE MORNING WHETHER THE WEATHER IS HOT OR COLD. WE VISITED AN AUDI DEALERSHIP BUT THEY FOUND NOTHING. A SEPARATE COMPLAINT HAD BEEN FILED UNDER MY NAME AS WELL. BOTH CARS HAVE THE SAME 3.0L V6 ENGINE.

THE VEHICLE SPEEDOMETER SHOWS A SPEED THAT EXCEED THE ACTUAL SPEED BY UP TO SIX PERCENT. PORSCHE CLAIMS IT IS WITHIN THE LEGAL LIMIT AND THEY DO NOT NEED TO CORRECT IT.

TL* THE CONTACT OWNS A 2019 PORSCHE MACAN. WHILE DRIVING 60 MPH OR MORE, THE VEHICLE VEERED FROM SIDE TO SIDE. THE VEHICLE WAS TAKEN TO AN UNKNOWN DEALER AND AN ALIGNMENT WAS PERFORMED BECAUSE IT WAS SLIGHTLY OFF; HOWEVER, THE FAILURE RECURRED. THE CONTACT TOOK THE VEHICLE TO TWO INDEPENDENT MECHANICS WHO CHECKED THE TORQUE ON THE SUSPENSION COMPONENT AND CONFIRMED THE FAILURE WAS DUE TO THE TIRES. THE CONTACT WENT TO ANOTHER TIRE DEALER TO REPLACE THE TIRES AT HIS EXPENSE AND TEST THE OLD TIRES FOR DEFECTS. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 70.