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.
Consequence
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.
Additional Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Campaign: 20V346000
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER
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Summary
Mazda North American Operations (Mazda) is recalling certain 2020 CX-30 and Mazda3 vehicles. The front brake caliper mounting bolts may not have been tightened properly during assembly, possibly allowing the calipers to loosen.
Consequence
Loose brake calipers can reduce braking performance or interfere with wheel rotation, affecting vehicle handling. Either of these scenarios can increase the risk of a crash.
Remedy
Mazda will notify owners, and dealers will inspect the front brake caliper bolts, tightening them as necessary. If bolts are missing, the affected brake caliper will be replaced. Repairs will be performed free of charge. The recall began July 24, 2020. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 4420F.
Additional Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Campaign: 20V347000
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
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Summary
Mazda North American Operations (Mazda) is recalling certain 2020 CX-30 vehicles equipped with all-wheel drive. The evaporative vent hose for the fuel tank may be disconnected, possibly allowing fuel to leak from the charcoal canister vent at the rear of the vehicle.
Consequence
A fuel leak in the presence of an ignition source may increase the risk of a fire. Additionally, the engine may stall while driving, increasing the risk of a crash.
Remedy
Mazda will notify owners, and dealers will inspect the evaporative vent hose in the fuel tank. If the hose is disconnected, it will be reconnected and the charcoal canister with some related parts will be replaced. Repairs will be performed free of charge. The recall began July 29, 2020. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 4520F.
Additional Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
NHTSA Investigations
1 investigation
Official NHTSA safety investigations for 2020 CX-30.
INV-2020-1000🟢 Closed
NHTSA opened investigation after receiving consumer complaints regarding CX-30 performance issues.
Opened: Affected Units: 21,338
Consumer Complaints
30 total complaints
Consumer-reported issues submitted to NHTSA for 2020 CX-30.
Common Reported SymptomsAI Analysis
Battery13%
Noise10%
Warning7%
Leak7%
Engine/Powertrain🔶 Medium
EXTERIOR LIGHTING,SERVICE BRAKES,FUEL/PROPULSION SYSTEM
The front camera didn't operate properly The brakes have an elongated stopping distance
Body/Interior🔵 Low
STRUCTURE
There is a module that should connect to the hatch door to open. That module in no longer available. Without the hatch door opening, in case of side impact and being pushed into something else, there is no way to get out of the car. This poses a serious safety hazard. I have contacted the Mazda dealership and I am told that the part is "retired" and there is no replacement part at this time.
Engine/Powertrain🔵 Low
POWER TRAIN
I OWN 2020 MAZDA CX 30 WITH 66000 MILES. THE TRANSMISSION WAS SHIFTING WITH JERKY MOTIONS. ON JULY 14, 2025 I BROUGHT THE CAR TO PALISADES MAZDA IN ROCKLAND COUNTY NEW YORK TO HAVE TRANSMISSION LOOKED AT AND TO CHANGE TRANSMISSION FLUID CHANGED. AFTER I DROPPED THE CAR OFF LATER THAT DAY I GOT A CALL THAT THE TRANSMISSION WAS CONDEMNED. I LOOKED ON THE INTERNET WITH SAME YEAR MAKE AND MODEL AND SEE THERE IS A BIG PROBLEM WITH THE TRANSMISSIONS ON THESE CARS AND MAZDA IS AWARE OF THE PROBLEM. TSB 05-002/20 IS A BULLETIN ABOUT TRANSMISSION FAILURES IN THIS VEHICLE. MAZDA IS WELL AWARE OF THE TRANSISSION PROBLEMS
Engine/Powertrain⚠️ High
POWER TRAIN,SEAT BELTS,UNKNOWN OR OTHER
The initial sensor alarm indication was low oil pressure and within less then an hour engine malfunction was detected and the vehicle stopped functioning. This incident occurred on [XXX] in SanAntonio and thereafter it was towed to the Mazda Dealership for inspection upon request. I was driving from Dallas to SanAntonio with my [XXX] and [XXX] children when the vehicle started making strange noise and It the notification on dashboard stated I need to immediately stop the vehicle for safety. Middle of nowhere I had to find a nearest safe place for my children. This vehicle put me and my kids in an unsafe environment due to the faulty engine that was installed by the Mazda company. I was afraid thinking the car will start on fire because it was an engine alert. Yes the vehicle has been inspected by the North Park Mazda dealership on 5/12/25 with an initial quote of engine repair for $7905.88. The first time I noted which was few weeks back prior to this incident when the vehicle stalled at me while I arrived and stopped the vehicle at UT Southwestern Medical Center were I work as a nurse to badge into my parking lot. I got worried for a moment thinking could it be battery issue? I turned off the vehicle and turned it back on and the vehicle starting working. I parked the car and completed a 12 hr shift and thereafter did few weeks of work without any alerts or issue on the vehicle until the day off [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Engine/Powertrain🔵 Low
POWER TRAIN
I am reporting a repeated and potentially dangerous transmission failure in my 2020 Mazda CX30. At 6 months old, the original transmission failed. Mazda confirmed it was defective and replaced it with a refurbished unit with 10,000 miles on it. That replacement is now also failing—within 4 years of the first failure. This means the car has experienced two transmission failures before reaching 5 years of service. This raises concerns about: •The reliability of Mazda’s factory parts •The quality and safety of refurbished transmissions Mazda uses in warranty repairs •A potential pattern of premature transmission failures on this model Repeated transmission failure can cause loss of power and control, posing serious safety risks to drivers and passengers. Mazda has all service records confirming both incidents. I am submitting this to alert NHTSA to a possible defect pattern that may warrant investigation.
Electrical🔵 Low
ELECTRICAL SYSTEM
The contact owns a 2020 Mazda CX-30. The contact stated that after starting the vehicle, the instrument panel made an abnormal sound. The contact then noticed that the odometer had inadvertently rolled back to 9,999 miles. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 49,000.
Engine/Powertrain🔵 Low
ENGINE
Low Engine Oil Light keeps appearing at seemingly random intervals. I will heat up my vehicle, begin driving, and sometimes after 10 minutes, sometimes after 20 minutes it will come on. I drove 2.5 hours and it did not come on at all. It first started Friday 11/29 and was driven to and from a few places and came on 50% of the time. The 2.5 hour drive occurred on Saturday 11/30 and the light did not come on at all.
Steering/Suspension🔵 Low
SUSPENSION
Rear coil spring broke at ~33,000 miles under normal driving conditions. No warnings given in vehicle safety system and not included in recommended maintenence. Seen when inspected by independent service center. Cannot safely drive vehicle until replaced.
Other🔵 Low
UNKNOWN OR OTHER
I am experiencing sharp edge on the Driver Side window up button. The Nicle plating is wearing off and causing safety concern. I have images of the concern. Will send upon request. Mazda is suggesting that I take the vehicle in for diagnostics and service. Their diagnostic cost is extremely high, and I am trying to avoid paying the diagnostic fee. Copy of the contents of my email sent to Mazda. I am experiencing sharp edge on the Driver Side window up button. I am wondering if this can be repaired under warranty or, should I report the abnormally to NHTSA to pursue a possible recall to have this switch replaced. I recall NHTSA had a recall on Hyundai vehicles a few years ago for the same issue. Can you please advise.
Visibility🔵 Low
VISIBILITY/WIPER
Defective windshield. There is visible warping in the windshield and Mazda won't cover the cost of the replacement. This is a known issue.
Frequently Asked Questions
Are there any recalls for the 2020 MAZDA CX-30?
Yes, the 2020 MAZDA CX-30 has 3 recorded recalls from NHTSA. These recalls cover various components including STRUCTURE:BODY:HATCHBACK/LIFTGATE, SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER, FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS.
Is the 2020 MAZDA CX-30 safe to drive?
The 2020 MAZDA CX-30 has 3 recalls. If you own this vehicle, check with your dealer to ensure all recall repairs have been completed. Most recalls have free remedies available.
Where can I check if my 2020 MAZDA CX-30 has open recalls?
You can check for open recalls by visiting NHTSA.gov and entering your Vehicle Identification Number (VIN), or by contacting your local MAZDA dealer.
🎯Risk Areas & Recommended Actions
Based on recall data, these components require verification:
1
Structure
Issue: increases occupant injury risk
✅
If you already own this vehicle: Contact your dealer immediately to confirm structure recall is complete. Recall repairs are always free.
🔍
If you are evaluating a used example: Request VIN and verify all structure recalls are completed before purchase.
Campaign:21V086000
2
Service brakes, hydraulic
Issue: increases crash or loss-of-control risk
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If you already own this vehicle: Contact your dealer immediately to confirm service brakes, hydraulic recall is complete. Recall repairs are always free.
🔍
If you are evaluating a used example: Request VIN and verify all service brakes, hydraulic recalls are completed before purchase.
Campaign:20V346000
3
Fuel system, gasoline
Issue: presents fire risk under certain conditions
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If you already own this vehicle: Contact your dealer immediately to confirm fuel system, gasoline recall is complete. Recall repairs are always free.
🔍
If you are evaluating a used example: Request VIN and verify all fuel system, gasoline recalls are completed before purchase.
Campaign:20V347000
💡Visit NHTSA.gov or contact your MAZDA dealer to verify recall completion status.
🧭What This Means for You
Both current owners and prospective buyers benefit from reviewing this safety analysis before making decisions.
If you're unsure, we recommend starting with a VIN check or consulting a certified mechanic.
🔑
If You Own This Vehicle
Verify all 3 recalls have been completed using your VIN at NHTSA.gov or through your MAZDA dealer.
If any recalls are open, schedule service immediately—recall repairs are always free.
Consider setting up VIN-specific alerts to receive notification of future recalls.
🛒
If You're Buying Used
Request documentation proving all recalls were addressed before finalizing purchase.
Factor potential recall-related service time into your ownership cost estimates.