2015 MAZDA MAZDA6 Fuelpropulsion System Problems

Fuel started leaking after 90,000 miles when tank is over 3/4 full.

I'VE OWNED THIS CAR FOR ABOUT 6 MONTHS. I USUALLY BUY GAS BY THE DOLLAR AMOUNT, BUT DID A COMPLETE COMPLETE FILL UP FOR THE FIRST TIME WITH THIS VEHICLE. AFTER DRIVING AWAY THEN PARKING AT HOME, I NOTICED A HEAVY GASOLINE SMELL AND CHECKED UNDERNEATH THE CAR. THERE WAS A CONSTANT DRIP (EVERY 15 SEC OR SO) COMING FROM UNDERNEATH, NEAR THE REAR DRIVER'S SIDE WHEEL. I NOW HAVE A PUDDLE. I'M AFRAID TO DRIVE IT. WHAT IF SOMEONE FLICKS A CIGARETTE AND IT CATCHES FIRE WHILE PARKED?! MY MECHANIC SAYS THAT THIS IS NOT NORMAL AFTER A COMPLETE FULL UP, AND SHOULD NEVER HAPPEN.

WAS FOLLOWING A CAR AND CAME UP TO A STOP LIGHT. I DEPRESSED BRAKE PEDAL AND FELT SOME RESISTANCE BUT CAR WOULD NOT STOP. FELT LIKE THE BRAKES WERE BEING BLED OFF BY PERHAPS COMPUTER CONTROL. I SWITCHED INTO A RIGHT HAND TURN LANE THAT WAS CLEAR, CAR STILL NOT STOPPING. SHIFTED INTO NEUTRAL, AND ENGINE STARTED TO REV UP PERHAPS TO 4500 RPM OR SO, THEN ENGINE WENT BACK TO IDLE ON ITS OWN. THE CAR HAD STOPPED AND I PUT IT IN PARK. WE THEN TURNED RIGHT AND CAUTIOUSLY PROCEEDED HOME, WITHOUT A FURTHER PROBLEM. TOOK TO DEALER AND REQUESTED THE MEMORY BE ANALYZED, THEY SAID THEY COULD NOT READ THE BLACK BOX AT THE DEALERSHIP. IT SHOWED NO FAULTS. TEST DRIVE WAS UNEVENTFUL. I AGAIN REQUESTED THE BLACK BOX BE ANALYZED AS THE BRAKES APPEARED TO BE BLEEDING OFF. THEY SAID THEY WOULD LET ME KNOW IF...