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What 138 owners told NHTSA about the 2014 Mazda Mazda3 Sedan

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (138)Crash / fire / injury (12)Electrical system (27)Fuel system (24)Brakes (22)Engine (13)Backup camera & sensors (11)Speed control (9)Parking Brake (8)Transmission & drivetrain (7)Seat belts (5)Visibility & wipers (5)

5 of 138 complaints match · Seat belts · clear filters

Feb 27, 2026AirbagsSeat belts

Airbag warning symbol on dashboard flashes with or without passenger seated in front seat.

NHTSA ODI 11721073

Jul 7, 2018Seat belts

REAR PASSANGER SEAT BELT FAILED IN LOCK POSITION NOTHING IN IT NO CANDY ECT AND STUCK IN THE OPEN POSITION REFUSES TO LOCK BELT CURRENT MILEAGE 37989 JUST OUT OF BUMPER TO BUMPER WARRANTEE

NHTSA ODI 11110039

Jun 20, 2017Seat belts

THE PASSENGER SEAT BELT HAD A TENSIONER THAT WAS BROKEN FROM EITHER RIGHT OFF THE DEALER'S LOT OR SHORTLY AFTER. UNDER HARD BRAKING, MY WIFE HIT THE DASHBOARD INSIDE THE CAR ONCE AS A PASSENGER. I SHOULD HAVE BROUGHT IT IN EARLIER. I JUST BROUGHT IT IN TODAY (6/20/2017) TO THE MAZDA DEALER (PUTNAM MAZDA IN BURLINGAME, CA) AND THEY DISCOVERED THE SEATBELT'S TENSIONER IS BROKEN INTERNALLY. THEY ARE REPLACING IT, THOUGH THE PART IS BACKORDERED UNTIL JULY. THERE IS REASONABLE SUSPICION TO BELIEVE MORE THAN MY VEHICLE MAY HAVE BEEN AFFECTED.

NHTSA ODI 11000239

Apr 26, 2017Seat belts

CINTURON DE SEGURIDAD CHOFER NO CIERR AL ASIENTOA DRIVER SAFETY BELT DOES NOT ATTACH TO THE SEAT ## VIN FAILED ## [XXX], MAZDA, 3, 2014 ## INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ODI 10980794

Sep 5, 2014AirbagsSeat beltsEquipment Adaptive/mobility

STARTING ABOUT A MONTH AFTER WE BOUGHT THE CAR WE NOTICED THAT THE INDICATOR LIGHT FOR THE PASSENGER SIDE AIR BAG WOULD SOMETIMES LIGHT UP INDICATING THAT THE PASSENGER SIDE AIRBAG WAS DEACTIVATED. WE STOP THE CAR AND EXITED THE VEHICLE AND REENTERED THE VEHICLE AND THE LIGHT STARTED TO WORK PROPERLY. OVER THE NEXT SEVERAL DAYS WE NOTICED THAT THE ISSUE WAS HAPPENING MORE OFTEN. WE TOOK THE CAR TO BROWN'S MAZDA IN ALEXANDRIA. AFTER CHECKING THE CAR OUT THEY SAID THERE WAS NOTHING WRONG WITH THE CAR. ON TUESDAY SEPTEMBER 2, 2014 ABOUT 10 DAYS AFTER HAVING THE CAR SERVICED MY WIFE AND I WAS DRIVING ON A LEVEL CITY STREET AROUND 5:48 PM, AT THAT TIME THE INDICATOR LIGHT WAS OFF, WHICH WOULD INDICATE THAT THE AIRBAG AND ACTIVE RESTRAINTS ARE ON AND THAT THE CAR RECOGNIZES THAT THERE IS AN ADULT IN THE PASSENGER SIDE SEAT. A CAR PULLED OUT FROM A SIDE STREET IN TO TRAFFIC CAUSING US TO HARD BRAKE IN ORDER TO AVOID THE ACCIDENT. MY WIFE THAT WAS IN THE PASSENGER SEAT WAS THROWN FORWARD AS IF SHE DID NOT EVEN HAVE A SEAT BELT ON, THE ACTIVE SEAT RESTRAINT DID NOT TIGHTEN AT ALL. THE PASSENGER SIDE AIRBAG LIGHT THAT WAS OFF WAS NOW ON INDICATING THAT THE AIRBAG AND RESTRAINT SYSTEM WAS OFF. SHE WAS SHAKEN BUT THANKFULLY NOT HARMED. AGAIN WE TOOK IT TO THE DEALERSHIP AND THEY HAVE SAID THAT THERE IS NOTHING THEY CAN DO TO FIX IT'S JUST PART OF THE DESIGN AND THAT PEOPLE MY WIFE SIZE SHOULD NOT USE THE CAR. I AM VERY CONCERNED ABOUT DRIVING THE CAR, BECAUSE THERE IS NO WAY TO PREDICT WHEN THE AIRBAG WILL DECIDE TO DEACTIVATE LEAVING THE PASSENGER AT RISK OF INJURY IF THERE WERE A CRASH OR ROLLOVER. *TR

NHTSA ODI 10630952

Working with the data? Download all 138 complaints as CSV · fetched from NHTSA July 18, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2014 Mazda Mazda3 Sedan verdict →