2016 Mazda CX-9 · symptom sheet
Check engine light or misfire
- 41owner reports
- 80,000median miles
- $6,000median quote
- 0involved a crash
Newest report Apr 28, 2026 · checked Sep 9, 2026
81 of the 104 complaints on this car are about the engine. 41 of those describe misfire, which makes it the most reported problem on the 2016 CX-9.
Tick what matches of 41 reports
What got replaced
Few of these reports name the part that was replaced.
Recalls and investigations
No recall on the engine covers the 2016 model year as of Sep 9, 2026.
What owners paid
17 of the 41 reports quote a price. Each dot is one quote. The middle half runs $5,000 to $7,479.
When it happens
The middle half of failures fell between 55,000 and 120,000 miles, from the 14 reports that gave a mileage.
What owners wrote
“The intercooler failed or failed cylinder head causing coolant leaking into the exhaust side and cause the engine to over heat.”
Filed Jan 9, 2024
“I just had my engine replaced due to a cracked cylinder head that allowed coolant to leak into cylinder #3 & #2.”
Filed Sep 15, 2023
“Head gasket blew in a 2016 Mazda CX9 while driving causing us to as safely as possible quickly get off the road from the middle lane of an interstate. This is from a known coolant leak in the cylinder head from service bulletin 01-013/21.”
Filed Feb 17, 2023
“Car overheated. check front engine and could not see any visible leaks. check all around the engine and found coolant leaking from the back of the engine. confirm by dealer that is leaking at the cylinder head.”
Filed Dec 30, 2022
Should you keep driving it?
This page can't tell you that. 0 of 41 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation.