2010 Mazda CX-9 Engine Problems

NHTSA component category: ENGINE · data through 07/12/2026

23Engine complaints

11.8%Of all 195 complaints

#2Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How engine ranks on this vehicle

SERVICE BRAKES88 · 45.1%

ENGINE23 · 11.8%

POWER TRAIN22 · 11.3%

AIR BAGS18 · 9.2%

SUSPENSION16 · 8.2%

Share of the 195 complaints citing each category; one complaint can cite several. Full breakdown on the 2010 Mazda CX-9 overview page.

What owners report

“CAR WAS ALWAYS SERVICED REGULARLY. ONE DAY I WAS ABOUT TO GET ON A BUSY HIGHWAY INTO BOSTON JUST BEFORE RUSH HOUR, WHEN MY CAR…”NHTSA complaint 11112905 — filed 07/22/2018

“THE ENGINE COMPLETELY LOST POWER. TIMING CHAIN FAILURE IN DOWNTOWN AREA / TRAFFIC, CAUSING FAILURE OF HEAD GASKET. WARNING AND IMMEDIATE FAILURE WHEN IN MOTION…”NHTSA complaint 11082334 — filed 04/01/2018

“I WAS DRIVING MY CAR WHEN THE TRANSFER CASE ON MY 2010 CX9 BROKE AT 109.000 MILES AND SPLINE GEAR IS WORN OUT. OVERWHELMING OIL…”NHTSA complaint 11062731 — filed 01/14/2018

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Engine complaints by year filed

Frequently asked questions

Does the 2010 Mazda CX-9 have engine problems?

Engine is the #2 most-reported problem area on the 2010 Mazda CX-9: 23 of 195 complaints on file (11.8%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2010 Mazda CX-9 have in total?

195 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 7 involved a crash, 5 involved a fire, 6 reported injuries, and none reported deaths.

What does NHTSA's engine category include?

NHTSA assigns each complaint to standard component categories; this page reports the ENGINE category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/12/2026.