2021 Mazda Cx-9 Safety Report
2021 Mazda CX-9: Strong crash ratings, but significant engine oil consumption and some safety system malfunctions reported.
AI Safety Analysis for the 2021 Mazda Cx-9
Reliability Score
The 2021 Mazda Cx-9 receives a reliability score of 65 out of 100 based on analysis of NHTSA complaint data, recall history, crash reports, and safety ratings. This indicates average reliability — some notable concerns exist that prospective buyers should be aware of.
Known Issues for the 2021 Mazda Cx-9
The following issues have been identified from NHTSA complaint data and owner reports for the 2021 Mazda Cx-9:
| Issue | Severity | Frequency | Typical Mileage |
|---|---|---|---|
| Excessive Engine Oil Consumption Engine consumes 1-2 quarts of oil every 2,500-4,000 miles, often before scheduled oil changes, due to defective valve stem seals. Acknowledged by Mazda TSBs and class-action settlement. |
High | Common | 2000-15000 miles |
| Second-Row Seat Unexpected Forward Slide Recall issued for 60/40 split bench second-row seats that may slide forward during a crash, increasing occupant injury risk. |
High | Rare | N/A miles |
| Airbag Non-Deployment In Frontal Collision Reports of driver-side airbags failing to deploy in frontal collisions, despite significant impact. |
High | Rare | N/A miles |
| Advanced Safety System Malfunctions Malfunctions of Smart Brake Support, Forward Obstruction Warning, and Front Radar Sensor, sometimes leading to 'limp mode' or reduced engine output. |
Medium | Occasional | N/A miles |
| Brake Clicking And Squeaking Persistent clicking and squeaking from brakes, even after rotor and pad replacement, with a TSB (04-001/22) noted. |
Medium | Occasional | 22000-49000 miles |
| Backup Camera Inaccuracy Backup camera display shows inaccurate distance to obstacles, leading to potential collisions. |
Low | Rare | N/A miles |
Common Problems Reported by Owners
Based on NHTSA complaint data, the following components account for the majority of reported issues with the 2021 Mazda Cx-9:
Predominantly excessive oil consumption due to defective valve stem seals, leading to low oil warnings and potential engine damage.
General complaints not fitting specific categories, including auto-locking issues with keys inside.
Persistent clicking and squeaking noises from brakes, even after component replacement.
Malfunctions of Smart Brake Support and Front Radar Sensor, impacting vehicle safety systems.
Loss of motive power and stalling at highway speeds.
Inaccurate backup camera display leading to collisions.
Popping sounds from the front end, especially when turning or over bumps.
Frequently Asked Questions About the 2021 Mazda Cx-9
Is the 2021 Mazda CX-9 safe?
Based on NHTSA data, the 2021 Mazda CX-9 received a 5-star overall safety rating, indicating strong crash test performance. However, there are significant concerns regarding engine oil consumption (15 complaints), a recall for second-row seats, and reports of airbag non-deployment in crashes, which should be considered.
What are common problems with the 2021 Mazda CX-9?
The most reported issue by far is excessive engine oil consumption, accounting for 15 out of 33 total complaints. Other problems include malfunctions of advanced safety systems like Smart Brake Support, persistent brake noises, and issues with the backup camera.
Has the 2021 Mazda CX-9 had any recalls?
Yes, the 2021 Mazda CX-9 has had 1 recall. This recall (NHTSA ID: 21V-932) addresses a defect where the left-side second-row seat may unexpectedly slide forward during a crash, increasing the risk of injury to occupants.
How does the 2021 Mazda CX-9 perform in crash tests?
The 2021 Mazda CX-9 performed well in NHTSA crash tests, earning a 5-star overall safety rating. It received 5 stars for side crash protection, and 4 stars for both frontal crash and rollover resistance.
Is the engine oil consumption issue a serious problem?
Yes, the excessive engine oil consumption is a serious and common problem for the 2021 Mazda CX-9, with numerous complaints. It is linked to defective valve stem seals and, if not monitored and addressed, can lead to engine damage or failure. Mazda has acknowledged this issue through TSBs and a class-action settlement.
Buyer Advice
Our recommendation: While the 2021 Mazda CX-9 boasts excellent crash test ratings, potential buyers should be aware of the widespread engine oil consumption issue and verify if the recall for the second-row seats has been addressed. Consider a pre-purchase inspection focusing on engine health and service records for oil consumption.
NHTSA Data Summary for 2021 Mazda Cx-9
This safety report is based on a comprehensive analysis of data from the National Highway Traffic Safety Administration (NHTSA) for the 2021 Mazda Cx-9. The data includes 33 consumer complaints filed by vehicle owners, 1 manufacturer-initiated safety recalls, 6 reported crashes, 1 reported injuries, and safety rating assessments associated with this vehicle.
The NHTSA has assigned the 2021 Mazda Cx-9 an overall safety rating of 5 out of 5 stars, with a frontal crash rating of 4 stars, a side crash rating of 5 stars, and a rollover rating of 4 stars. These ratings are determined through controlled crash testing conducted by the NHTSA.
All data presented in this report is sourced from public NHTSA databases. Our AI analysis identifies patterns across complaint narratives, correlates them with recall history, and produces the safety assessment above. This analysis is updated as new complaints and recalls are filed with the NHTSA.
Consumers are encouraged to report vehicle safety problems to the NHTSA at nhtsa.gov. If your vehicle is subject to a recall, contact your dealer to schedule the free repair.