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#BS-2021-MAZCX3-FA07

2021 Mazda CX-30Problems, Recalls & Reliability

Based on reports from 139 owners and 2 recalls for this exact model.

Data updated ·checked October 21, 2026 · NHTSA complaints through October 19, 2026

Complaints
139
Crashes
15
Fires
0
Recalls
2
TSBs
616
🟢

Preliminary Verdict

Proceed with Caution

Based on 139 complaints, 15 crashes, 0 fires, and 2 recalls.

See full verdict with buy/skip conditions

Top reported problems

1

battery drain

2 complaints • Severity 4/10

$X,XXX
2

recall-radar cruise

1 complaints • Severity 4/10

$X,XXX
3

recall-tail life gate

1 complaints • Severity 10/10

$X,XXX
4

bose speakers crackle

1 complaints • Severity 2/10

$X,XXX
5

cruise control difficult to set

1 complaints • Severity 8/10

$X,XXX

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Mechanic Inspection Checklist

!Check the EngineHIGH

49 owners reported engine issues — failures commonly reported around 13K miles.

!Inspect the ElectricalMED
Look for symptoms of wear and premature failure
+ 6 more items in full checklistUnlock

Failure Timeline by Mileage

11
0–30K
6
30–60K
60–90K
90–120K
120–150K
150K+

Peak failure range: 0–30K miles (11 reports) • Median: 13K miles

Full report: which components fail at each mileageUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Engine (49 reports).

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Where the complaints fall

Engine49 (35%)
Electrical14 (10%)
Other10 (7%)
Visibility9 (6%)
Drivetrain8 (6%)
Brakes8 (6%)
Speed Control7 (5%)
Forward Collision Avoidance: Automatic Emergency Braking5 (4%)

2021 Mazda CX-30: Known Issues & Problem Areas

Engine Issues

Engine complaints account for 35% of all reports filed for the 2021 Mazda CX-30, with 49 owners filing complaints with NHTSA. The median mileage at time of complaint is 13,450 miles, suggesting issues tend to surface around the 13K-mile mark.

Electrical Issues

Electrical complaints account for 10% of all reports filed for the 2021 Mazda CX-30, with 14 owners filing complaints with NHTSA. Owners should pay attention to electrical-related symptoms during test drives and pre-purchase inspections.

Visibility Issues

Visibility complaints account for 6% of all reports filed for the 2021 Mazda CX-30, with 9 owners filing complaints with NHTSA. Owners should pay attention to visibility-related symptoms during test drives and pre-purchase inspections.

Drivetrain Issues

Drivetrain complaints account for 6% of all reports filed for the 2021 Mazda CX-30, with 8 owners filing complaints with NHTSA. Owners should pay attention to drivetrain-related symptoms during test drives and pre-purchase inspections.

Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.

Complaint trend by year

9
21
45
22
29
23
28
24
12
25
16
26

Complaints filed with NHTSA by year for the 2021 Mazda CX-30. Recent trend: increasing.

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Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (2 recalls)

21V086000Apr 2021

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.

21V101000Apr 2021

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.

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

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2021 Mazda CX-30 NHTSA Safety Ratings

Overall

★★★★★

5 of 5 stars

Frontal crash

★★★★★

5 of 5 stars

Side crash

★★★★★

5 of 5 stars

Rollover

★★★★★

4 of 5 stars

From NHTSA's New Car Assessment Program (5-Star Safety Ratings). Where NHTSA tested more than one version of this vehicle, the lowest rating is shown.

The worst model year for the Mazda CX-30 is the 2023 — worth knowing if you're cross-shopping years. The biggest problem area is electrical.

2021 Mazda CX-30 vs. Class Average (Small Sport Utility Vehicle 2WD)

This vehicle

139

Class avg

206

Below the class average — fewer complaints than typical small sport utility vehicle 2wd vehicles. A good sign.

Complaint counts correlate with sales volume — popular vehicles naturally generate more reports. The full report normalizes for this.

About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 139 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 2 recalls found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Last updated (checked October 21, 2026). NHTSA complaints received through October 19, 2026; safety ratings from NHTSA's 5-Star program.

Other Mazda CX-30 Model Years

2026202520242023202220212020
View all Mazda CX-30 years →

2021 Mazda CX-30: Frequently Asked Questions

What is the most common problem with the 2021 Mazda CX-30?
The most commonly reported issue with the 2021 Mazda CX-30 is related to the engine, with 49 complaints filed with NHTSA.
Is the 2021 Mazda CX-30 reliable?
The 2021 Mazda CX-30 has 139 complaints, 15 crash reports, and 0 fire reports filed with NHTSA. This is below the class average — a positive sign for reliability.
How safe is the 2021 Mazda CX-30?
NHTSA rates the 2021 Mazda CX-30 5 out of 5 stars overall, with 5 stars in frontal crash tests, 5 stars in side crash tests, 4 stars for rollover resistance. Where NHTSA tested more than one version, the lowest rating is shown.
How much does it cost to fix 2021 Mazda CX-30 problems?
Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.
Does the 2021 Mazda CX-30 have any recalls?
Yes, the 2021 Mazda CX-30 has 2 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.
What mileage do Mazda CX-30 problems start?
Based on 17 complaints with mileage data, the median mileage at time of complaint is 13,450 miles. The highest concentration of reported issues occurs in the 0–30K mile range. The full report breaks down exactly which components fail at each mileage bracket.
When was the 2021 Mazda CX-30 data last updated?
BumperScan last checked this vehicle against NHTSA on October 21, 2026, covering owner complaints received through October 19, 2026 plus the latest recalls, investigations and technical service bulletins. Its numbers last changed on October 4, 2026.
What’s in the full report?
10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.
How is this different from free NHTSA data?
NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.
How is this different from Carfax?
Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.
What if the report isn’t useful?
100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.
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10 sections of AI analysis based on 139 owner reports. Know before you buy.

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