I PURCHASED A 2016 NEW MAZDA CX-5 IN OCTOBER 2016. MY CAR WAS ONLY 5 MONTHS OLD WITH 5411 MILEAGE ON IT WHEN I EXPERIENCED THIS PROBLEM. I WAS PULLING UP MY DRIVEWAY WHEN I GOT IN FRONT OF MY GARAGE DOORS OF MY HOME, WITH MY FOOT ON THE BRAKE ABOUT READY TO PUT THE CAR IN PARK , THE ENGINE BEGAN TO REV UP TO A HIGH RATE OF SPEED AND ACCELERATED INTO MY HOUSE. THE HOUSE STOPPED THE CAR FROM GOING ANY FURTHER. MY HUSBAND WAS IN THE PASSENGER SEAT AND EXPERIENCED THIS AS WELL. I WAS PRESSING DOWN ON THE BRAKE, BUT NOTHING STOPPED IT. I WAS CLOSE DISTANCE TO THE HOUSE AND IT HAPPENED SO FAST. I BACKED OFF MY HOUSE. I HAD TO GET MY GARAGE DOORS REPLACED AND THE CAR FIXED. I DID NOT DRIVE THE CAR AGAIN. ONCE THE BODY SHOP FIXED THE CAR (DAMAGE $2300.00 DOLLARS), I HAD THE VEHICLE TOWED TO THE MAZDA DEALERSHIP WHERE I PURCHASED THE CAR TO INVESTIGATE THE PROBLEM. THEY DROVE IT FOR A FEW WEEKS WITH A BLACK BOX, BUT NEVER DETERMINED THE PROBLEM OR IT HAPPENING AGAIN. MAZDA CORPORATION WAS INVOLVED WITH THIS INVESTIGATION. I HAD FILED THE PROBLEM WITH THEM IMMEDIATELY AFTER THE ACCIDENT HAD OCCURRED. I REFUSED TO DRIVE THE CAR AGAIN. THE DEALERSHIP (MAZDA IN MANCHESTER, NH) WORKED A DEAL WITH ME TO BUY THE CAR BACK AND GET ME INTO A NEW 2016 MAZDA CX-5. I HOPE I DON'T EXPERIENCE THIS WITH MY NEW CX-5. I REALLY LIKE THE CAR, BUT I HAVE TO SAY THAT WAS AN EXPERIENCE THAT NO ONE WOULD EVER WANT TO EXPERIENCE. I AM JUST GRATEFUL THAT I WASN'T ON A STREET AND IT HAPPENED TO MY OWN PROPERT