2010 Mazda CX-9 Service Brakes Problems

NHTSA component category: SERVICE BRAKES · data through 07/14/2026

88Service Brakes complaints

45.1%Of all 195 complaints

#1Most-reported category

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

How service brakes 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

“BRAKE BOOSTER FAILED AT 90K MILES. PEDAL IS EXTREMELY HARD TO PUSH AND HAS LITTLE BRAKE FORCE. ALONG WITH A LOUD HISSING NOISE FROM BRAKES…”NHTSA complaint 11131814 — filed 09/26/2018

“STARTED GETTING A HISSING SOUND FROM THE BRAKE BOOSTER AND A HARD TO DEPRESS BRAKE PEDAL.”NHTSA complaint 11110806 — filed 07/11/2018

“HISSING SOUND NEAR BRAKE PEDAL FOLLOWED BY EXTREMELY HARD PEDAL AND MUCH EFFORT TO STOP.”NHTSA complaint 11072742 — filed 02/13/2018

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

Service Brakes complaints by year filed

Frequently asked questions

Does the 2010 Mazda CX-9 have service brakes problems?

Service Brakes is the most-reported problem area on the 2010 Mazda CX-9: 88 of 195 complaints on file (45.1%). 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 07/14/2026. Across all categories, 7 involved a crash, 5 involved a fire, 6 reported injuries, and none reported deaths.

What does NHTSA's service brakes category include?

NHTSA assigns each complaint to standard component categories; this page reports the SERVICE BRAKES 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 07/14/2026.