2017 Alfa Romeo Giulia complaints

I PURCHASED THIS VEHICLE AT THE END OF MAY 2017, AFTER PUTTING ON ABOUT 500 MI WITHIN 4 WEEKS, A CHECK ENGINE LIGHT CAME ON, I TOOK IT TO THE DEALERSHIP, THEY KEPT IT OVERNIGHT,LOOKED AT IT, AND CALLED THE FOLLOWING DAY & SAID THERE WAS "SOMETHING LOOSE THAT NEEDED TO BE TIGHTENED" AND THAT THE CAR WAS READY FOR PICK UP. I DROVE THE CAR AND PARKED IT IN MY GARAGE. THE FOLLOWING DAY, I TOOK THE CAR OUT, TURNED IT AROUND AND BACKED IT UP TO PARK IN FRONT OF MY GARAGE, I WAS GOING SLOWLY (UNDER 5 MPH) THE BRAKED LOCKED UP AND THE CAR ACCELERATED IN REVERSE HITTING MY GARAGE BEFORE I COULD STOP IT BY TURNING OFF THE ENGINE. I CALLED THE DEALERSHIP, BUT GOT NO RESPONSE. A FEW HOURS LATER I HAD A LUNCH APPOINTMENT. THE MAN I WAS MEETING WANTED ME TO TAKE HIM FOR A SHORT RIDE IN THE CAR, WHICH I DID. AS WE RETURNED TO THE RESTAURANT, I PULLED INTO THE PARKING SPACE SLOWLY, AND ENGAGED THE BRAKES, AGAIN THE CAR WENT INTO SUDDEN ACCELERATION, GOING OVER ARBORVITAE TREES AND INTO A NEIGHBORING PARKING LOT. THE DEALERSHIP WAS CALLED AND THE CAR TOWED. ON BOTH OF THESE OCCASIONS I WAS DRIVING SLOWLY, BOTH TIMES I HAD MY FOOT ON THE BRAKE AND FELT THEM LOCK AS THE CAR WENT INTO ACCELERATION, AND BOTH TIMES I HAD TO TURN OFF THE CAR TO GET IT TO STOP.

THE ENGINE STALLED FOLLOWING FUEL TOP OFF. IT STALLED MOVING IN SLOW TRAFFIC.

LEFT REAR PASSENGER SEATBACK IS MISSING LATCH TO SECURE SEATBACK FROM FOLDING IN FRONTAL CRASH OR HARD BRAKEING. SEE PICTURES.