2021 Mazda MAZDA3 Other or unknown Problems
- Complaints
- 7about this part
- Share
- 13%of 54 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the other or unknown of the 2021 Mazda MAZDA3, 13% of the 54 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“For the past 7 months (since July 2023) the passenger rear tire keeps loosing air pressure about every two weeks requiring more air. It always drops to 10 points below the other tires. The tires have been rotated twice so it is not a problem with the tire. I believe there is a recall for the same or similar issue on Mazda 3s just not including my VIN#. I brought my car to good year a few times unable to stop this from happening.”
NHTSA complaint #11572875, filed 2024-02“While driving at a normal speed on a clear, sunny day with no other vehicles close by, I heard a loud crash sound and my car's sunroof unexpectedly shattered. The inside glass panel looks like it's shattered and it caused tiny glass shards to fall inside the vehicle onto my right arm and the surrounding area. I closed the cover to prevent more from falling. This occurred without any prior warning, signs, or symptoms such as unusual noises or warning lights from the car. …”
NHTSA complaint #11595814, filed 2024-06“My 2021 Mazda 3 was bought used in August 2023 and is about a year old in my possession. it has been at the Mazda dealership for repairs multiple times since August 2023. it dangerously stalls and hesitates when trying to accelerate from a stop position. When the brake pedal is released and I start to accelerate like merging onto highways,the car rumbles or shakes slightly and then shuts off. I Came across a review online that had the exact same problem and it stated a PCM update solved the issue. …”
NHTSA complaint #11626518, filed 2024-11“Experiencing a known excessive oil consumption issue. Low engine oil warning light came on and upon checking, oil was low. This occured at 4000 to 4200 miles. It occured again about 4000 miles later and again at a similar interval. I notified the dealer and scheduled a repair date but I am concerned of other possible damage that may have already occured due to this issue. An oxygen sensor needs to be replaced and is most likely due to the engine malfunction. The cause of the consumption is said to be damage to the valve seals on the exhaust side.”
NHTSA complaint #11515069, filed 2023-04“A have a new 2021 Mazda 3 Hatchback with 3,500 miles. As I was driving and approaching a traffic light to stop, my car shut down completely while in traffic. I turned on my hazard lights, put the car in the park position, and restarted the vehicle. As I proceed with driving, when I made a right turn onto the blvd, a minute after turning when I came to another stop, the vehicle shut down again. I called Romano Mazda in Syracuse, NY. They set me up with an appointment for the following week and gave me a rental. They kept my vehicle for 3 days. …”
NHTSA complaint #11460348, filed 2022-04Related service bulletins
- 11037900Sep 17, 2026Mazda Connected Services - Frequently Asked Questions (FAQ) This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text.
- 11037634Sep 10, 2026This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-038/26 08/18/26 and 06/15/26 DESCRIPTION Some customers may…
- 11037018Sep 4, 2026This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-038/26 06/15/26 DESCRIPTION Some customers may complain…
- 11037012Aug 20, 2026This Service Alert supersedes the previously issued Service Alerts listed below: The changes are noted in Red. Infotainment Reboot With Navigation Card Installed This Service…
- 11037019Aug 19, 2026This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red text. SA-039/26 06/15/26 Mazda Connect Symptom Troubleshooting DESCRIPTION…
- 11037010Aug 18, 2026DESCRIPTION Some customers may complain about SiriusXM Travel Link, Traffic Plus showing expired even though the customer purchased a paid subscription. SiriusXM audio packages…
- 11034448Jul 1, 2026This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text. SA-017/25 12/16/25, 09/08/25, 07/14/25, 05/15/25 and 03/21/25 DESCRIPTION…
- 11034436Jun 18, 2026This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 09-012/21 12/13/21, 06/10/21 and 04/27/21 DESCRIPTION Some customers may…
- 11034444Jun 16, 2026This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-009/25 08/22/25 and 02/18/25 DESCRIPTION Some customers may experience a…
- 11034443Jun 16, 2026This Service Alert supersedes the previously issued SA listed below. The changes are noted in Red text. SA-012/25 10/06/25, 08/21/25, 05/15/25 and 02/27/25 DESCRIPTION Customers…
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 2 | 25% |
| 2024 | 4 | 33% |
| 2023 | 3 | 25% |
| 2022 | 1 | 4% |
| 2021 | 7 | 13% |
| 2020 | 3 | 9% |
| 2019 | 15 | 20% |
| 2018 | 26 | 24% |
| 2017 | 28 | 33% |
| 2016 | 23 | 22% |
| 2015 | 26 | 20% |
| 2014 | 27 | 20% |
| 2013 | 10 | 9% |
| 2012 | 20 | 9% |
| 2011 | 18 | 14% |
| 2010 | 135 | 20% |
| 2009 | 4 | 3% |
| 2008 | 11 | 4% |
| 2007 | 4 | 2% |
| 2006 | 9 | 5% |
| 2005 | 1 | 1% |
Other parts of the 2021 Mazda MAZDA3
19 complaintsElectrical system
7 complaintsForward collision avoidance
7 complaintsBrakes
5 complaintsAir bags
4 complaintsTransmission and drivetrain
4 complaintsLane departure
3 complaintsFuel system
2 complaintsBody and structure
2 complaintsSuspension
2 complaintsVehicle speed control
2 complaintsWheels
2 complaints
← All problems reported for the 2021 Mazda MAZDA3
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology