There is a bearing in the crankshaft that looks like it’s not up to spec. No warning lights came on, car suddenly lost power on the highway. Fortunately no one was injured though it was a very scary situation. Mechanic took a look inside the engine and said a main bearing stud broke off and busted a hole through the short block. He said I’m lucky the engine didn’t turn into a grenade. Upon looking…
2016 mazda Mazda6 engine problems
moderate 3 complaints filed with NHTSA · avg repair $3,100
Complaints
3
Recalls
0
Crashes
0
Avg fix
$3,100
What owners are reporting 2 most recent
MY CAR HAS BEEN SHOWING RED CHECK ENGINE LIGHT RANDOMLY FOR THE LST 3 MONTHS. IT LASTS 24 - 48 HRS, SOMETIMES AFTER OIL CHANGE. DEALER SAID NOTHING TO WORRY ABOUT, BUT I FINALLY TOOK IT TO AUTOZONE WHO SAID CODE WAS STORED AS MISFIRE ON CYLINDER 4. DEALER IS LOOKING AT IT NOW, BUT ALWAYS DISMISSED IT BEFORE. NOW THAT I KNOW IT HAS TO DUE WITH A CYLINDER - WHY DIDN'T THEY INVESTIGATE FURTHER? OF CO…
Common questions
How serious is the engine problem on the 2016 mazda Mazda6?
It's a documented issue but not catastrophic. 3 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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