I SLOWED DOWN IN GROCERY STORE PARKING LOT. SLOWLY APPROACHING PARKING SPACE AND APPLYING THE BRAKE TO STOP CAR. THEN SUDDENLY WITH NO REASON THE CAR ACCELERATED, JUMPED THE CURB AND HIT BUILDING. THE WHOLE RIGHT SIDE WAS HEAVY DAMAGED.I HAD NO CONTROL. IT WAS UNINTENDED ACCELERATION. I MOVED THE CAR OFF THE GRASS FROM BUILDING, THIS TIME STOPPED NORMALLY. I AM AFRAID TO DRIVE THIS CAR BECAUSE I AM CONCERNED IT WILL DO THIS AGAIN AND I COULD HURT OR KILL MYSELF OR SOMEONE ELSE. CAR IS STILL UNDER WARRANTY TO 8/12/2019.PLEASE VISIT WWW.CARPROBLEMZOO.COM/MAZDA/CX-5/SERVICE-BRAKES-PROBLEM AND YOU WILL SEE SO MANY CX-5 OWNERS HAVE REPORTED PROBLEMS RELATED TO BRAKES. SOME EXPERIENCED UNINTENDED ACCELERATION TWICE. THIS IS BIG SAFETY PROBLEM.