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Light NHTSA footprint — 49 owner complaints and 1 active recall campaign. Either a clean record or thin data; we'll show what's there.
Solid reliability overall. Common issues are concentrated in a few systems.
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.
Instrument panel display shows a warrning message: Air Bag System Malfunction. Have the Vehicle inspected.
The contact owns a 2021 Mazda Mazda3. The contact received notification of an unknown Class Action Lawsuit Number however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the repair. The manufacturer…
Radiators are failing 3 years after the warranty period. Its leading to coolant lost and perhaps overheating the engine.
Purchased car in January 2020 and within a month/few thousand miles the low engine oil light came on. Almost two years later car continues to burn excessive oil triggering low engine oil light. Dealer doesn’t acknowledge an issue, Mazda still doesn’t have a repair. Owners…
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.
Mostly yes. With a reliability score of 8.0 out of 10 based on 49 owner complaints filed with NHTSA, the 2021 Mazda Mazda3 is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
On the NHTSA data, the 2021 Mazda Mazda3 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 8.0/10 — 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.
Based on NHTSA records, the most-reported issue is engine, with 16 complaints filed. 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. 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 49 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.