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The 2021 Mazda CX-30 has 100 NHTSA owner complaints and 2 active recall campaigns on file. Here's the breakdown — what's serious, what's noise, and what a working mechanic would actually do about it.
The 2021 Mazda CX-30 has 100 NHTSA owner complaints and 2 recalls on file (U.S. federal records, as of August 2026). The most-reported system is engine at 37 complaints, typically surfacing around 13,900 miles (~$3,100 to repair). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2020 CX-30 | 32 | 3 |
| 2021 CX-30 (this page) | 100 | 2 |
| 2022 CX-30 | 32 | 1 |
| 2023 CX-30 | 22 | 1 |
| 2024 CX-30 | 27 | 2 |
Solid reliability overall. Common issues are concentrated in a few systems.
Worth owning if you verify the specific issues below before you buy.
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.
Driver-assist features on the tested model: Electronic stability control: Standard · Forward collision warning: Standard · Lane departure warning: Standard
Source: NHTSA New Car Assessment Program — tested configuration: 2021 Mazda CX-30 SUV AWD. Stars rate crash protection in NHTSA's tests, not overall reliability — see the owner-complaint data below for what actually goes wrong.
Here's what this model is known to do — so you can inspect for it, price it in, or make the seller fix it before you sign.
⚠ The one to take seriously: brakes is flagged severe on this model , showing up around 26,500 mi. Inspect it closely on a test drive.
Run the VIN from the listing — 2 active recalls on this model. Recall repairs are always free.
Verdict for buyers: 7.4/10 model. The priciest documented failure is engine (~$3,100) — get the seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report tells you what this exact car has been through. Smart buyers get both.
See the full pre-purchase inspection checklist →A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in this vehicle's actual NHTSA record, not generic advice.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
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.
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…
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…
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…
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
A sudden air leak from the tire air valve may cause a loss of vehicle control while driving, increasing the risk of a crash.
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.
Mostly yes. With a reliability score of 7.4 out of 10 based on 100 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.
The 2021 Mazda CX-30 is acceptable, with specific caveats. Worth owning if you verify the specific issues below before you buy. The record behind that call: Reliability score 7.4/10 — around the segment average; 2 recall campaigns on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
Inspect the engine first — it's the most-reported issue on this model, with 37 owner complaints filed. Typical failure occurs around 13,900 miles. Average repair cost runs about $3,100 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
It scores 7.4 out of 10 on our NHTSA-based read of 100 owner complaints. The main thing to watch is engine. Typical failure occurs around 13,900 miles. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
Based on NHTSA records, the most-reported issue is engine, with 37 complaints filed. Typical failure occurs around 13,900 miles. Average repair cost runs about $3,100 at an independent shop.
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.
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.
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 100 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.