There are 2 stored owner reports matching the engine leading-label group for the 2011 Mazda Mazda6 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 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)VEHICLE HAS A 3.7L V6 DURATEC ENGINE DESIGNED BY FORD. I WAS ENTERING THE HIGHWAY AT ABOUT 55MPH, CHECK ENGINE LIGHT WENT ON, THEN VEHICLE SHUT OFF, AND I LOST BOTH POWER AND STEERING. WAS ABLE TO GET TO SIDE OF THE HIGHWAY WITHOUT CRASHING. STEAM/SMOKE WAS COMING OUT OF THE HOOD AND THE TEMP GAUGE WAS PINNED AT H. DEALERSHIP ADVISED THAT COOLANT HAD GOTTEN MIXED WITH OIL AND ENGINE WAS DESTROYED. COST TO REPAIR - $7400 USED $13K NEW ENGINE. TOLD IT WAS NOT DUE TO ANY NEGLECT OR MAINTENANCE ISSUE. IT WAS A WATER PUMP FAILURE. THERE IS A DESIGN FLAW IN THIS ENGINE. THE WATER PUMP IS INTEGRATED INTO THE ENGINE AND TIMING CHAIN. WHEN THE PUMP FAILS IT DAMAGES THE ENGINE, ALLOWING COOLANT TO MIX WITH THE OIL. NUMEROUS FORD AND MAZDA OWNERS HAVE HAD THIS PROBLEM BUT BECAUSE IT USUALLY HAPPENS AT OR AFTER 100K MILES THE MANUFACTURERS DO NOT REPORT IT. THEY WILL ALSO DO NOTHING TO HELP THE CUSTOMER WHO IS LEFT WITH A HUGE REPAIR BILL OR A TOTALED CAR. PLEASE HELP ME AND OTHER OWNERS. I HAVE RESEARCH WITH THE NAMES OF OTHER OWNERS WHO HAD THE SAME PROBLEM WITH THEIR FORD OR MAZDA.
MY 2011 MAZDA 6 HAD THE EXHAUST SYSTEM BECOME DETACHED TWICE WITHIN 3.5 YEARS. I PURCHASED THE CAR NEW. I HEARD IT THE FIRST TIME AS I WAS DRIVING SLOWLY, LUCKILY. I WAS ABLE TO PULL OVER AND MAKE IT HOME SO I COULD TIE IT UP WITH ROPE TO GET TO A REPAIR SHOP. THE 2ND TIME I WAS PULLING OUT OF HOME WHEN I HEARD THE SAME SCRAPING NOISE. I LUCKILY COULD PULL BACK HOME TO TIE IT UP AND TO GET TO A REPAIR SHOP. WHEN I WAS AT THE REPAIR SHOW LAST TIME, THE MECHANIC SAID THAT THIS IS A RECURRING PROBLEM WITH MAZDA 6 BOLTS ROTTING OUT. I AM JUST GLAD I WAS DRIVING ON THE HIGHWAY AND HIGHER SPEEDS WHEN THIS HAPPENED. IT COULD HAVE CAUSED A FIRE. *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.