There are 4 stored owner reports matching the fuel system leading-label group for the 2007 Mazda Mazda3 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 4 of 4 matching reports.
Open the full vehicle complaint log (all categories)MY BRAKE LIGHT HOUSING IS MELTED ON BOTH SIDES. THE BRAKE LIGHT BULB IS MELTED INTO THE BRAKE LIGHT SOCKETS ON BOTH THE LEFT AND RIGHT BRAKE LIGHTS. I NOTICED WHILE DRIVING IN THE CITY AND CARS WERE FLAGGING ME TO TELL ME MY BRAKE LIGHTS ARE OUT. I PULLED INTO A AUTO SHOP TO CHECK AND BOTH SIDES WERE MELTED. I HAD MY CAR SINCE 2013 AND EVERYTHING WAS ORIGINAL STOCK. MY CHECK ENGINE LIGHT FLASHES AND WHEN I HAD IT CHECKED THEY SAID IT MAY BE FAULTY FUEL PUMP, BECAUSE THAT'S THE ONLY CODE THAT SHOWS AND I ALREADY HAD EVERYTHING REPLACED. MY CAR VERY FREQUENTLY STALLS OUT (HIGHWAYS AND CITY STREETS) EVEN AFTER REPLACING THE FUEL PUMP AND O2 SENSOR. THE PASSENGER AIRBAG LIGHT FLICKERS FREQUENTLY, WITH AND WITHOUT PASSENGERS. *TR
ON 8/5/16 THE VEHICLE WAS BOUGHT INTO A MAZDA DEALER FOR A GASOLINE ODOR & ENGINE CODE # PO455. IT WAS DETERMINED THAT A SPLIT FUEL PUMP RETAINING ALLOWED THE FUEL PUMP TO SEPARATE FROM THE FUEL TANK CAUSING GASOLINE TO LEAK. FORTUNATELY THE VEHICLE DID NOT CATCH ON FIRE. THANK GOODNESS. I MAY NOT HAVE HAD A SON TODAY. THE REPAIR CAME TO OVER $500.00. MAZDA DOES NOT FEEL OBLIGATED TO COVER THE FULL COST. IN MY OPINION THIS IS NOT A MAINTENANCE ITEM BUT A DEFINITE SAFETY DEFECT.
2007 MAZDA 3 GAS CAP VEHICLE FAILED STATE CAR INSPECTION. PARTS DEPARTMENT AT DEALERSHIPS HAVING A PROBLEM KEEPING PART IN STOCK. HAVE BEEN TOLD BY DEALERSHIP THAT MAZDA UPDATED GAS CAP IN END OF 2007 KNOWING THAT THERE WAS A DEFECT.. TALKED TO SERVICE DEPT, EVERY 2007 MAZDA 3 THAT IS NOW GOING THROUGH IT'S FIRST INSPECTION HAS FAILED. COULD CAUSE ENGINE PROBLEMS IN FUTURE. MAZDA WILL NOT REPLACE GAP, ONLY SELL NEW ONES. MAZDA HAS NOT NOTIFIED OWNERS OF PROBLEMS. *TR
GAS TANK PUNCTURE WHILE DRIVING TO WORK. PUNCTURE IS PINHOLE SIZE. THE ONLY EVENT LEADING TO THIS WAS BRAKING HARD TO AVOID A DEER. THERE WAS NO ACCIDENT, NO OTHER DAMAGE TO UNDERCARRIAGE, BASICALLY NO SIGNS OF ANYTHING EXCEPT A SMALL HOLE IN THE TANK. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.