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ProblemsByVin File / 2021-MAZDA-CX-30 NHTSA data synced 4 days ago
2021 · Mazda

Mazda CX-30 problems

96 owner complaints and 1 active recall campaign on file. Here's the breakdown — what's serious, what's noise, what a working mechanic would actually do about it.

0 5 10
Reliability score
7.6 / 10

Solid reliability overall. Common issues are concentrated in a few systems.

0
Critical
1
Severe
0
Moderate
Should you avoid this 2021 CX-30?
Generally reliable

Buyable on the data — keep up the usual maintenance and inspect normally.

Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.

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Top trouble spots 7 categories with 3+ complaints

engine
36 reports · fails ~13,900 mi · avg $3,100
moderate
electrical
9 reports · fails ~17,045 mi · avg $850
moderate
powertrain
8 reports · avg $2,500
moderate
visibility
8 reports · avg $350
moderate
brakes
7 reports · fails ~26,500 mi · avg $450
severe
cruise control
5 reports · fails ~24,000 mi · avg $600
severe
airbags
3 reports · fails ~13,450 mi · avg $1,100
severe
Buyer's checklist
Going to look at one? Use the pre-purchase inspection list.
Generated from this 2021 CX-30's actual NHTSA complaint history — every item points at a documented failure pattern on this exact vehicle, not generic walkaround filler.
See the checklist ->
Honest Calculator
Should you buy an extended warranty on this 2021 CX-30?
We pulled the math: risk-weighted exposure, typical contract cost, and our verdict on whether coverage pencils out for this specific vehicle.
See the calculator ->

What owners are saying recent NHTSA-filed complaints · verbatim

2021 CX-30 · engine
Low engine oil light displayed at 7,030 miles. No leaks detected. Engine consuming oil burning in combustion chamber. Possible engine damage or failure if oil was not quickly refilled.
2021 CX-30 · airbags Crash
The contact owned a 2021 Mazda CX30. The contact stated while making a left turn, another vehicle struck the middle of her vehicle causing server damage. The contact stated that none of the frontal air bags were deployed. The contact suffered severe injuries and she sought…
12/22/2022 · at 13,450 mi · NHTSA ODI #11498534.0 · see airbags pattern →
2021 CX-30 · wheels
On December 13, 2025, my vehicle (2021 Mazda CX-30) was serviced at a Valvoline Instant Oil Change location. During service, the technician stated he was checking tire pressure and asked whether 36 PSI was acceptable. I agreed. When I pulled out of the bay, the tire pressure…
12/18/2025 · NHTSA ODI #11705780.0
2021 CX-30 · powertrain
The car's battery has failed two times. The second time is after the battery was replaced -- so the problem was with two different batteries. Both times, I had to call & wait for roadside assistance. Dangerous situation. Both times, the car required a jump-start then a full…
View all 96 owner complaints →
Had a problem with your 2021 Mazda CX-30? File a complaint with NHTSA → It's free and official — owner filings are what build the federal safety record behind this page.

Estimate your repair exposure

Drag to your current mileage. Numbers are derived from this vehicle's complaint history.

0 mi 200k mi
At 80,000 miles
Likely repair cost in next 24 months
$0

Active recalls showing 1 of 1

severe NHTSA 21V086000 February 18, 2021

Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-30 vehicles

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.

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.

Common questions

Is the 2021 Mazda CX-30 reliable?

Mostly yes. With a reliability score of 7.6 out of 10 based on 96 owner complaints filed with NHTSA, the 2021 Mazda CX-30 is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.

Should you avoid the 2021 Mazda CX-30?

On the NHTSA data, the 2021 Mazda CX-30 does not need avoiding. Buyable on the data — keep up the usual maintenance and inspect normally. The record behind that call: No systemic severe-failure pattern in the complaint record; Reliability score 7.6/10 — above the segment average; 1 recall campaign on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.

What's the most common problem on the 2021 Mazda CX-30?

Based on NHTSA records, the most-reported issue is engine, with 36 complaints filed. Typical failure occurs around 13,900 miles. Average repair cost runs about $3,100 at an independent shop.

What's the most expensive thing that goes wrong?

The engine is one of the costlier repair items. Average repair cost runs about $3,100 at an independent shop. Typical failure occurs around 13,900 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.

How do I check if my Mazda CX-30 has open recalls?

Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.

Is an extended warranty worth it on a 2021 Mazda CX-30?

Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 96 complaints on file and the costliest repair averaging $3,100, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.

Related

Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA) public records database, last synced 4 days ago. Verify the raw federal record at nhtsa.gov/vehicle/2021/Mazda/CX-30. Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics. We are not affiliated with Mazda. Some links on this page are affiliate links and we may earn a commission if you complete a quote or purchase.
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