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#BS-2021-MAZCX9-41E4

2021 Mazda Cx 9

Based on reports from 41 owners and 1 recall for this exact model.

Complaints

Crashes

Fires

Recalls

TSBs

406

🟢

Preliminary Verdict

Proceed with Caution

Based on 41 complaints, 10 crashes, 0 fires, and 1 recalls.

See full verdict with buy/skip conditions

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Mechanic Inspection Checklist

!Check the EngineHIGH

16 owners reported engine issues — failures commonly reported around 53K miles.

!Inspect the BrakesMED

Look for symptoms of wear and premature failure

+ 6 more items in full checklistUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Engine (16 reports).

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Where the complaints fall

Engine16 (39%)

Other6 (15%)

Brakes4 (10%)

Collision Avoidance3 (7%)

Drivetrain2 (5%)

Airbags2 (5%)

Back Over Prevention: Warnings1 (2%)

Wheels & Tires1 (2%)

2021 Mazda Cx 9: Known Issues & Problem Areas

Engine Issues

Engine complaints account for 39% of all reports filed for the 2021 Mazda Cx 9, with 16 owners filing complaints with NHTSA. The median mileage at time of complaint is 53,186 miles, suggesting issues tend to surface around the 53K-mile mark.

Brakes Issues

Brakes complaints account for 10% of all reports filed for the 2021 Mazda Cx 9, with 4 owners filing complaints with NHTSA. Owners should pay attention to brakes-related symptoms during test drives and pre-purchase inspections.

Collision Avoidance Issues

Collision Avoidance complaints account for 7% of all reports filed for the 2021 Mazda Cx 9, with 3 owners filing complaints with NHTSA. Owners should pay attention to collision avoidance-related symptoms during test drives and pre-purchase inspections.

Drivetrain Issues

Drivetrain complaints account for 5% of all reports filed for the 2021 Mazda Cx 9, with 2 owners filing complaints with NHTSA. Owners should pay attention to drivetrain-related symptoms during test drives and pre-purchase inspections.

Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.

Complaint trend by year

Complaints filed with NHTSA by year for the 2021 Mazda Cx 9. Recent trend: decreasing.

Don't negotiate blind — know what this car costs to own

Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (1 recall)

21V750000Nov 2021

SEATS:MID/REAR ASSEMBLY

Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-9 vehicles equipped with 60/40 split bench second-row seats. The left-side second-row seat may unexpectedly slide forward during a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 210, "Seat Belt Assembly Anchorages."

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

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The worst model year for the Mazda Cx 9 is the 2015 — worth knowing if you're cross-shopping years. The biggest problem area is brakes.

2021 Mazda Cx 9 vs. Class Average (Small Sport Utility Vehicle 2WD)

This vehicle

Class avg

172

Below the class average — fewer complaints than typical small sport utility vehicle 2wd vehicles. A good sign.

Complaint counts correlate with sales volume — popular vehicles naturally generate more reports. The full report normalizes for this.

About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 41 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 1 recall found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Other Mazda Cx 9 Model Years

2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007

View all Mazda Cx 9 years →

2021 Mazda Cx 9: Frequently Asked Questions

What is the most common problem with the 2021 Mazda Cx 9?

The most commonly reported issue with the 2021 Mazda Cx 9 is related to the engine, with 16 complaints filed with NHTSA.

Is the 2021 Mazda Cx 9 reliable?

The 2021 Mazda Cx 9 has 41 complaints, 10 crash reports, and 0 fire reports filed with NHTSA. This is below the class average — a positive sign for reliability.

How much does it cost to fix 2021 Mazda Cx 9 problems?

Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.

Does the 2021 Mazda Cx 9 have any recalls?

Yes, the 2021 Mazda Cx 9 has 1 recall on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.

What mileage do Mazda Cx 9 problems start?

Based on 6 complaints with mileage data, the median mileage at time of complaint is 53,186 miles. The highest concentration of reported issues occurs in the 30–60K mile range. The full report breaks down exactly which components fail at each mileage bracket.

What’s in the full report?

10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.

How is this different from free NHTSA data?

NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.

How is this different from Carfax?

Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.

What if the report isn’t useful?

100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.