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.
The fix and full notice
Fix: 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.
Mazda North American Operations (Mazda) is recalling certain 2021 Mazda3 and 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.
The fix and full notice
Fix: 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.
Mazda North American Operations (Mazda) is recalling certain 2020-2021CX-30 vehicles.
NHTSA listing: CX-30. Mazda campaign 4621B.
Questions about any of these recalls: call NHTSA's Vehicle Safety Hotline at 888-327-4236 (TTY 888-275-9171) or check your VIN at nhtsa.gov/recalls.
NHTSA investigations
NHTSA's investigations file, dated Nov 12, 2026, lists no investigations for the 2021 Mazda CX-30.
What owners report
Owners have filed 101 complaints with NHTSA about the 2021 CX-30. Below, they are sorted by the problems owners describe and by the areas NHTSA files them under. NHTSA does not verify complaints.
Most named: automatic emergency braking (5); warnings (4)
Visibility/wiper9 · 9%
Brakes8 · 8%
Powertrain8 · 8%
Speed control8 · 8%
Unknown or other10 · 10%
A complaint can name more than one area, so shares add up to more than 100%.
Mazda CX-30 recalls and complaints by model year
The highlighted bars are the 2021 model year. Newer model years have had less time on the road, so their counts are lower. Counting complaints filed in each model year's first three years, the 2021 CX-30 drew the most (68).
Owner complaints
2021: 101 complaintsTap or drag across the chart for other years.
Show as a table
Owner complaints by model year, Mazda CX-30
Model year
Complaints
2020
34
2021
101
2022
33
2023
25
2024
35
2025
26
2026
4
Safety recalls
2021: 2 recallsTap or drag across the chart for other years.
Show as a table
Safety recalls by model year, Mazda CX-30
Model year
Recalls
2020
3
2021
2
2022
1
2023
1
2024
2
2025
1
2026
0
Crash test ratings
NHTSA's 5-Star Safety Ratings for each version it tested. Rollover risk is NHTSA's estimate of the chance of rolling over in a single-vehicle crash.
In the 101 owner complaints filed with NHTSA for the 2021 Mazda CX-30, the problems described most are excessive oil consumption (19) and a dead battery or battery drain (5). NHTSA does not verify complaints, and one complaint can describe several problems.
Is the 2021 Mazda CX-30 safe?
In NHTSA crash tests every tested version of the 2021 Mazda CX-30 earns 5 stars overall. The table above lists each tested version.
Is NHTSA investigating the 2021 Mazda CX-30?
No. NHTSA's investigations file, dated Nov 12, 2026, lists no investigations for the 2021 Mazda CX-30.
How do I check if my CX-30 has an open recall?
Enter the 17-character VIN from your dashboard, door jamb or registration at nhtsa.gov/recalls. The lookup lists unrepaired recalls for that exact vehicle. Safety recall repairs are free at Mazda dealers.
Sources and method
NHTSA recalls file (NHTSA datasets), dated Nov 12, 2026; every campaign checked against NHTSA's recalls API.
NHTSA owner complaints file, dated Nov 11, 2026. Counted by complaint number, so a complaint naming three components counts once in the total.
NHTSA investigations file, dated Nov 12, 2026. Defect petitions, which ask NHTSA to open an investigation, are listed apart and only while open. Audit queries, which check whether a company met its recall and reporting duties rather than whether a vehicle has a problem, are not listed.
NHTSA 5-Star Safety Ratings (NCAP).
NHTSA model names covered: CX-30.
Complaint counts are unverified owner reports. They rise with sales volume and time on the road, so compare model years with care. How we build these pages. Spotted an error? Tell us.