BrakeNewsOwner complaints, read early

Your vehicle report

2021 Mazda CX-30

The problems owners report. The recalls to check. The evidence behind each.

NHTSA data through October 2026View original NHTSA data Change vehicle

Your vehicle at a glance

Complaint patterns and official recall records, kept distinct.

Owner complaints
101
Received May 2021 to Sep 2026
Official recalls listed
2
Naming this model year; check your VIN for applicability
BrakeNews flagged problems
0
Statistical signals, not official defect findings or recalls

Owner reports

Most reported problems

  1. 1
    Engine burns excessive oil between changes33 complaints · 33% of this vehicle’s complaints
  2. 2
    Glass shatters or cracks without impact6 complaints · 5.9% of this vehicle’s complaints
  3. 3
    Battery drains and dies when parked6 complaints · 5.9% of this vehicle’s complaints
See all reported problems

Official NHTSA records

Recalls to check

  • Recall #21V101000Mazda North American Operations (Mazda) is recalling certain 2021 Mazda3 and CX-30 vehicles. Air may suddenly leak from the tire air valve.
  • Recall #21V086000Mazda 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.
View recall details

BrakeNews signals

Flagged complaint patterns

Unusual complaint patterns with no matched recall yet. A flag does not mean a recall will happen.

No problems currently meet BrakeNews’s flagging criteria. This is not a safety rating.

How flags are identified

Complaint counts reflect reports submitted to NHTSA, not failure rates or a reliability ranking. Reported in these complaints: 10 crashes, 0 fires, 13 people injured, 0 deaths.

Explore by system

Where do owners report problems?

Choose an area on the car or a system below to explore the reported problems.

Schematic car with five system shortcutsGeneric side view, with the front on the left. Numbered links explore engine, brakes, steering, electrical, and body complaints. Text controls below provide the same choices.12345FRONTSCHEMATIC VIEW

Illustrative only; not this vehicle’s exact design. Areas represent complaint categories, not confirmed defective parts.

View selected problems

Showing all 8 listed problems by system.

Engine & powertrain

Brakes

Electrical & lights

Airbags, belts & seats

Steering, suspension & tires

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Body, doors & glass

Driver assistance

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Other

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Complaint history

When NHTSA received these reports. Changes in reporting alone do not establish a change in failure rates.

Complaints received about the 2021 Mazda CX-30
7
Show as a table
MonthComplaints
May 20213
June 20210
July 20211
August 20210
September 20210
October 20212
November 20211
December 20211
January 20222
February 20222
March 20221
April 20221
May 20222
June 20226
July 20226
August 20227
September 20225
October 20222
November 20221
December 20222
January 20233
February 20230
March 20234
April 20231
May 20230
June 20231
July 20232
August 20233
September 20234
October 20233
November 20232
December 20230
January 20242
February 20240
March 20242
April 20241
May 20241
June 20241
July 20244
August 20242
September 20241
October 20242
November 20240
December 20241
January 20251
February 20253
March 20250
April 20250
May 20250
June 20250
July 20250
August 20251
September 20251
October 20250
November 20250
December 20251
January 20260
February 20260
March 20262
April 20261
May 20261
June 20262
July 20262
August 20260
September 20261
October 20260
Total101

Problems owners report

Listed groups have at least 3 complaints. The page includes the 20 largest groups plus any additional flagged groups; some complaints are not assigned to a group.

ProblemComplaintsShareShare ratioStatus
Engine burns excessive oil between changes3333%–
Glass shatters or cracks without impact65.9%–
Battery drains and dies when parked65.9%–
Airbags fail to deploy in crashes55.0%–
Unintended acceleration despite braking44.0%–
Automatic emergency braking applies without reason44.0%–
Side mirrors give poor rear visibility33.0%–
Seat belt fails to latch or retract33.0%–

AI groups complaints by meaning; the groups are approximate. Share ratio compares the problem’s share of this vehicle’s complaints with its share on other vehicles over the last 24 months (shown from 3 recent complaints). A 2× ratio means twice the complaint share, not twice the failure risk. Flags mark unusual shares or recent surges after an AI review of the complaint content. “First signal” does not mean the pattern has persisted continuously.How recall estimates are calculated.

Recalls

  • NHTSA recall #21V101000February 22, 2021599 vehicles affected

    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.

    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.

  • NHTSA recall #21V086000February 18, 202113,857 vehicles affected

    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.

    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.

Other model years

About this data

NHTSA complaints and recalls through October 2026. Complaints are counted once each, however many components they name. Original complaints are on NHTSA's page for the 2021 Mazda CX-30.

Problem groups are formed by AI and may be approximate. BrakeNews flags unusual complaint patterns; they are not official defect findings. Investigation reports are written and checked by AI, with no human review. Owner reports do not establish that a defect exists.

Read the methodology and track record · Check current recalls by VIN