2021 Mazda CX-30 problems and complaints
Owners have filed 101 complaints with NHTSA about the 2021 Mazda CX-30. The most-reported areas: Engine (49), Electrical System (14), Forward Collision Avoidance (12).
Key takeaways
- 101 owner complaints on file with NHTSA.
- 10 involve a crash, 0 a fire, 13 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Engine | 49 | 49% |
| Electrical System | 14 | 14% |
| Forward Collision Avoidance | 12 | 12% |
| Unknown Or Other | 10 | 10% |
| Visibility/Wiper | 9 | 9% |
| Service Brakes | 8 | 8% |
| Power Train | 8 | 8% |
| Vehicle Speed Control | 8 | 8% |
| Visibility | 3 | 3% |
| Air Bags | 3 | 3% |
| Fuel/Propulsion System | 3 | 3% |
| Seats | 2 | 2% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2021 Mazda CX-30 SUV AWD | 5/5 | 5/5 | 5/5 | 4/5 |
| 2021 Mazda CX-30 SUV FWD | 5/5 | 5/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Electrical System - filed 2026-09-20
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 ...
Visibility - filed 2026-07-27
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 a...
Engine - filed 2026-07-05
Excessive oil consumption. Regularly have a low oil warning come up about 6000 kms after an oil change. Oil is always low when checked.
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More for the 2021 Mazda CX-30
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.