2021 Mazda CX-30 Engine Problems
- Complaints
- 49about this part
- Share
- 49%of 101 total for the year
- Median mileage
- 16,845miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 49 complaints about the engine of the 2021 Mazda CX-30, 49% of the 101 complaints for this model year. Where a mileage was given, the median is 16,845 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“While driving, on approach to a stop signal, at an intersection the car stopped moving. The display said engine malfunction, have inspected. The electronics and engine continued to operate, but the car would not move when gas pedal was depressed. I shut off and restarted my vehicle numerous times, with no effect on the problem, the car still would not move. …”
NHTSA complaint #11734603, filed 2026-04“The low engine oil warning light keeps coming on, and there’s appears to be no visible leak. I add about a quart each time this happens and it does fine for a while. The last time I took it to the dealership, I told them about it. They just said they didn’t see a leak and not to worry about it. Ultimately the issue is how will this impact the longevity of my engine?”
NHTSA complaint #11533383, filed 2023-07“Engine is consuming/burning oil. I have needed to add 1 qt of oil every 3-4k miles, since purchased new. Car now has 25,000 miles and I have added oil 6 times. Ive called the dealer(Classic Mazda in Mentor Ohio) and they insist this is normal and there is no issue with the engine. Yet, I read on the internet that this is a known problem.”
NHTSA complaint #11477820, filed 2022-08“Low engine oil level since I bought it in September 2021. I’ve had it at the dealer three times and they’ve said there are no codes on the car but they are on my Mazda app. They want me to drive it over a hour away with low oil to prove to them that the engine oil is low. I did this, shut the car off, the light went off and when the engine oil level was checked it read one quart low.”
NHTSA complaint #11543012, filed 2023-09“I have just about 8800 miles on my Mazda CX-30 Turbo after a year and 5 months. Suddenly had my low oil engine light come on. I pulled over and the oil is barely on the tip of the oil stick. My last oil change, which was also my first, was completed at 4937 miles from the Mazda dealership.”
NHTSA complaint #11476654, filed 2022-07Related service bulletins
- 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…
- 11036688Aug 10, 2026This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red text. 01-012/22 10/06/22 DESCRIPTION Some vehicles may exhibit accumulation…
- 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…
- 11034447Jun 19, 2026This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION If you encounter any type of electrical concern (e.g…
- 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…
- 11032106Apr 29, 2026Valve Stem Seals Class Action Settlement Program for Excessive Oil Consumption and Oil Consumption Powertrain Warranty Extension Special Service Program SSPD5. Updated April 28…
- 11032103Apr 21, 2026This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory…
- 11032101Apr 16, 2026This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-002/19 09/30/19 and 12/19/19 DESCRIPTION If an engine assembly is…
- 11030636Mar 11, 2026This Service Alert supersedes the previously issued SA(s) and TSB(s) listed below: The changes are noted in Red. SA-035/24 05/31/24 DESCRIPTION There is a concern that some water…
- 11030701Mar 5, 2026Subject: TSB 01-001/26 Warranty and Parts Kit Update INCLUDES: Warranty Extension Program - Special Service Program (SSP) D8 Check Engine Light ON with DTC P0126:00, 2018-2025…
Engine: other model years
Other parts of the 2021 Mazda CX-30
14 complaintsForward collision avoidance
12 complaintsVisibility (wipers, defrost, mirrors)
11 complaintsOther or unknown
10 complaintsBrakes
8 complaintsTransmission and drivetrain
8 complaintsVehicle speed control
8 complaintsAir bags
3 complaintsFuel system
3 complaintsSeats
2 complaintsExterior lighting
1 complaintsLane departure
1 complaints
← All problems reported for the 2021 Mazda CX-30
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