Is the 2021 Mazda CX-30 reliable?

There isn't enough NHTSA complaint data on file yet to give this model year a verdict.

What are the most common problems with the 2021 Mazda CX-30?

The most-reported component is engine, accounting for 49% of complaints on file.

How many recalls does the 2021 Mazda CX-30 have?

2 recalls on file for this model year.

2021 Mazda CX-30

○ Not enough data

2021 Mazda CX-30
RENDERED 2026-11-01T11:36:43.189Z

Not enough comparison years on file yet for a fair verdict.

This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.

How is this computed?

Complaints: 101
Recalls: 2
Investigations: 0
Top problem: Engine

Complaints per year

2021: 101 complaints

View as data table

Year	Complaints
2020	34
2021	101
2022	33
2023	25
2024	33
2025	26
2026	4

Known problem areas

Percentages can add to more than 100% — a complaint can name more than one system.

Engine

49% · 49 reports

Electrical system

14% · 14 reports

Show complaint excerpts

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.

NHTSA ODI report, 2026-09-20

Forward collision avoidance

13% · 13 reports

Most commonly citing automatic emergency braking and warnings.

CRASHINJURY

Show complaint excerpts

The accident occurred on the afternoon of Tuesday, November 14, which I reported to Enterprise, City of Falls Church, on the morning of November 15.

NHTSA ODI report, 2023-11-18

Also filed under Service brakes

Visibility/wiper

9% · 9 reports

Power train

8% · 8 reports

Safety timeline

2 recalls · 0 investigations · oldest first

To check one car, enter its VIN on the NHTSA recall page. Check a VIN →

R

2021-04-06Tires21V101000 Mazda North American Operations (Mazda) is recalling certain 2021 Mazda3 and CX-30 vehicles. Air may suddenly leak from the tire air valve.

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.

Check if this car was fixed →
R

2021-04-08Structure21V086000 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.

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.

Check if this car was fixed →

Buy-smart checklist

2021 Mazda CX-30 — pre-purchase inspection

Inspect

Engine: 49 reports on file for this year.
Electrical system: 14 reports on file for this year.
Forward collision avoidance: 13 reports on file for this year.

Verify these recalls were completed

Recall 21V101000 · Tires
Recall 21V086000 · Structure

FAQ

Is the 2021 Mazda CX-30 reliable?: There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
What are the most common problems with the 2021 Mazda CX-30?: The most-reported component is engine, accounting for 49% of complaints on file.
How many recalls does the 2021 Mazda CX-30 have?: 2 recalls on file for this model year.

Data updated 2026-10-31 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.