2019 Mazda Mazda3 Power Train

I noticed oil was leaking and my engine was steaming after driving. My mechanic found a crack in a cylinder after watching YouTube and finding out Mazda has this issue.

The contact owns a 2019 Mazda Mazda3. The contact stated while driving 40 MPH, the vehicle lost motive power with the vehicle network malfunction, vehicle inspection”, the check engine warning light and all the safety features were disabled, and the windshield wipers turned on independently. The contact was able to pull over on the side of the road. The contact mentioned that the gear shifter failed to shift out of park(P) and the vehicle was turned off. The vehicle was restarted, and the contact was able to operate the vehicle normally. The vehicle was taken to the dealer for a diagnostic test and stated that no failure was found however, the failure reoccurred. The vehicle was taken back to the dealer and the dealer stated that they were aware of the failure, but the vehicle needed to be diagnosed by a Tech. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 36,329.

AUTOMATIC TRANSMISSION WENT OUT ON ME WHILE DRIVING ON ROAD. THE TRANSMISSION STARTED TO SLIP WHILE I WAS DOING 15 MPH AND JUST GAVE OUT IN THE MIDDLE OF THE STREET. ALL YOU COULD SMELL IS BURNT FLUID AND HEAR A LOUD WHINING NOISE FROM UNDER THE CAR WHILE AT IDLE. THE CAR ONLY HAS 12,680 MILES ON IT. THE TRANSMISSION WAS REPLACED UNDER WARRANTY. I AM HIGHLY DISAPPOINTMENT WITH THIS CAR.*DT*JB

FROM A FULL STOP, VEHICLE LAGS OR LURCHES FROM TAKEOFF WHEN YOU HIT THE ACCELERATOR. THIS IS A KNOWN PROBLEM BY MAZDA ON THIS VEHICLE (GEN 7) AFTER 3000 MILES OR MORE. WHEN I HIT THE ACCELERATOR (ESPECIALLY ON A NEW CAR), I EXPECT IT TO GO. THIS LAG IN MOVING OFF THE LINE CAN BE DANGEROUS, IN MY OPINION, BUT APPARENTLY NOT IN MAZDA'S. BEEN TRYING TO GET IT FIXED FOR PAST 6 MONTHS, BUT HEARING IT'S NOT A PRIORITY FOR MAZDA JAPAN, SINCE THIS PROBLEM IS NEWLY BEING REPORTED ON 2019 AND 2020'S AND THEY DON'T CONSIDER IT A SAFETY ISSUE, JUST AN ANNOYANCE.

A SAFETY CRITICAL INCIDENT OCCURRED ON MY NEW 2019 MAZDA 3 HATCHBACK WHEN THE VEHICLE WHEN INTO "LIMP" MODE WHILE ADAPTIVE CRUISE CONTROL WAS ENGAGED AT HIGHWAY SPEEDS LEADING TO RAPID DECELERATION. THE VEHICLE WAS TOWED TO THE NEAREST MANUFACTURER SERVICE LOCATION WHERE A DIAGNOSTIC WAS PERFORMED. CODES SHOW THAT COMMUNICATION BETWEEN THE CENTRAL VEHICLE PROCESSOR AND MULTIPLE SUB-PROCESSORS FAILED SIMULTANEOUSLY. COMMENTS WERE MADE BY MANUFACTURER SERVICE REPRESENTATIVES THAT FAILURE MODE IS LIKELY DIFFERENT FROM THE RECENT CYLINDER DEACTIVATION/ROCKER ARM RECALL. SERVICE REPRESENTATIVES WERE INSTRUCTED TO SIMPLY CLEAR THE CODES AND DRIVE THE VEHICLE TO ATTEMPT TO REPRODUCE THE FAILURE DURING WHICH IT DID NOT OCCUR. I HAVE ATTACHED A SANITIZED VERSION OF THE SERVICE RECEIPT TO THIS MESSAGE WITH THE FULL LIST OF CODES. UNFORTUNATELY MAZDA'S REPRESENTATIVES WERE UNABLE TO PROVIDE ANY EXPLANATION ON WHY THIS FAILURE OCCURRED OR WHAT WILL BE DONE TO PREVENT IT IN THE FUTURE. ENGINEERING ANALYSIS WILL NEED TO BE PERFORMED TO REACH AN ACCEPTABLE CONCLUSION. ENVIRONMENTAL FACTORS RELATING TO THE INCIDENT INCLUDE A VERY HOT OUTSIDE AIR TEMPERATURE, WITH A READING OF 115 DEG F FROM THE VEHICLE'S SENSOR ROUGHLY 15 MINUTES BEFORE THE INCIDENT. THE INCIDENT ALSO OCCURRED ON A VERY LONG SECTION OF US HIGHWAY WITH A CONSISTENT, GRADUAL INCLINE. GIVEN THAT INFORMATION POTENTIAL CAUSES ARE INTERMITTENT COMPUTER HARDWARE FAILURE IN HIGH TEMPERATURE ENVIRONMENTS, OR A SOFTWARE ERROR IN POWER TRAIN CONTROL OR CRUISE CONTROL CAUSING A COMMUNICATION BUS FAILURE. WITH THE AGE AND MILEAGE OF THE VEHICLE (336 MI) THE POTENTIAL FOR THIS FAILURE OCCURRING IS LIKELY PRESENT IN A LARGE PORTION OF NEW MAZDA VEHICLES.