2021 Mazda CX-30 problems, complaints & recalls

2021 Mazda CX-30 recalls (2)

• Recall 21V101000Feb 22, 2021599 vehicles
  TIRES:VALVE

  Mazda North American Operations (Mazda) is recalling certain 2021 Mazda3 and CX-30 vehicles. Air may suddenly leak from the tire air valve.

  Risk: A sudden air leak from the tire air valve may cause a loss of vehicle control while driving, increasing the risk of a crash.

  Remedy: Mazda will notify owners, and dealers will replace all four tire air valves with new parts, free of charge. The recall began April 6, 2021. Owners may contact Mazda customer service at 1-800-222-5500 Option 4. Mazda's number for this recall is 4721B.

• Recall 21V086000Feb 18, 202113,857 vehicles
  STRUCTURE:BODY:HATCHBACK/LIFTGATE

  Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-30 vehicles. When fully opened, the power liftgate may partially lower unexpectedly when the vehicle is parked facing uphill on a slope.

  Risk: If the power liftgate unexpectedly lowers while a person is accessing the rear storage area of the vehicle, it can increase their risk of injury.

  Remedy: Mazda will notify owners, and dealers will update the power liftgate control module software and inspect the serial number of the power liftgate drive unit, replacing it if necessary, free of charge. The recall began April 8, 2021. Owners may contact Mazda customer service at 1-800-222-5500 option 4. Mazda's number for this recall is 4621B.

Recent 2021 Mazda CX-30 complaints

Excerpts of the newest owner complaints, lightly cleaned of personal details. Complaints are unverified owner reports.

1. Filed Sep 20, 2026CAElectrical System

   For the past 2 years there has been a severe parasitic battery drain issue that drains that battery partially or in some cases completely ruins new batteries. Car has spent a cumulative total of 3 months with a dealer trying to find the source. 5 batteries in 2 years and often times need to jump start the car. Car has been at dealer dozens of times and they have been unable to resolve issue. In looking online many others with same problems

   NHTSA complaint #11765721 · source
2. Filed Jul 27, 2026TXVisibility & Wipers

   The climate control system suffered a sudden, complete failure due to an engineering defect documented in Mazda Technical Service Bulletin (TSB) ID: MC-10203760-0001. The factory evaporator core leaked refrigerant rapidly starving the A/C compressor of essential lubricating oil. This caused the compressor to overheat and complete seize. This failure occurred during extreme summer heat exceeding 100 degrees Fahrenheit, creating an immediate health hazard inside the cabin…

   NHTSA complaint #11753153 · source
3. Filed Jul 5, 2026ALEngine

   Excessive oil consumption. Regularly have a low oil warning come up about 6000 kms after an oil change. Oil is always low when checked.

   NHTSA complaint #11748372 · source
4. Filed Jun 17, 2026FLVisibility & Wipers

   The vehicle experienced a premature internal A/C failure, resulting in a total loss of climate control refrigerant. Because the A/C system failed, the vehicle's windshield defroster completely stopped removing humidity and moisture from the cabin air. This caused the front windshield to instantly and severely fog over while operating the vehicle completely obstructing forward driver visibility. The manufacturer has issued Technical Service Bulletin (TSB) MC-10203760-0001 for…

   NHTSA complaint #11744720 · source
5. Filed Jun 13, 2026LACrashBrakesDriver Assistance & Safety Tech

   On June 3rd, 2026, about 1:15 PM, I braked in the rain because there was a stopped car in front of me. The brakes did not work; the Automatic Emergency brakes did not work; the Forward Collision Warning did not work and I hit the car in front of me causing a 3 car accident. As I hit the car I saw the Forward Collision Warning come on and then go out. Unfortunately, the brakes worked after that and the Mazda Collision Center cannot find anything wrong with the brakes. I note…

   NHTSA complaint #11743896 · source
6. Filed May 22, 2026CAAirbags

   Following a recent inspection at Perry Mazda in Santa Barbara, my vehicle was diagnosed with a failed clock spring mechanism causing airbag malfunction warnings. Clock spring failure under 70K miles on a 2021 vehicle is premature and suggests a defect rather than normal wear. I contacted Mazda North America and it has been over a week without a response. I have maintained the vehicle responsible and have no history of collisions or modifications that could have contributed…

   NHTSA complaint #11739586 · source
7. Filed Apr 29, 2026MAEngineOther / UnknownTransmission & Drivetrain

   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. The vehicle behind me had to brake unexpectedly, and I could have been hit by others in the intersection, there could…

   NHTSA complaint #11734603 · source
8. Filed Mar 9, 2026ILOther / Unknown

   The left and/or right side sun visor does not stay in the fully retracted position and may lower slightly due to its own weight. The problem is attributed to a broken connection point where the sun visor attaches to the vehicle. Impaired visibility, particularly in bright sunlight.

   NHTSA complaint #11722934 · source

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Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data, as of Oct 11, 2026. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology