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What 32 owners told NHTSA about the 2020 Mazda Mazda3 Sedan

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (32)Driver assistance (15)Brakes (3)Electrical system (3)Steering (3)Fuel system (2)Lane Departure (2)Suspension (2)Body & structure (1)Engine (1)Equipment (1)

3 of 32 complaints match · Electrical system · clear filters

Jun 16, 2024Electrical systemLightsLane Departure

Google search shows Mazda has common problem with their front sensing camera, people are reporting the issue for different Mazda models across the board for the last few years including newer models as well. My car display shows few malfunction warning messages. Following captured from MyMazda app. 1. Forward sensing camera malfunction. i-ACTIVESENSE advanced safety and driver support systems may not operate correctly. 2. High Beam Control System is disabled. Automatic switching between high and low beams is unavailable.

NHTSA ODI 11594653

Jun 12, 2023Electrical system

Automatic safety notification censoring system for the brakes engaged when a stop was not applicable or necessary causing the car to brake on its own in traffic. Luckily no one else was on the road.

NHTSA ODI 11526537

Dec 22, 2021Electrical systemEngine

EL VEHICULO TIENE PROBLEMAS DE ENCENDIDO, DESPUES DE ESTAR EN REPOSO DOS DIAS NO ENCIENDE SE TIENE QUE PASAR CORRIENTE, INCLUSIVE EN MANEJOS CORTOS AL VOLVER A ENCENDER EL VEHICULO PRESENTA EL MISMO PROBLEMA, ESTE ES UN PROBLEMA EN LA MAYORIA DE ESTE TIPO DE VEHICULOS, MISMOS QUE SON ENCONTRADOS MUCHOS COMENTARIOS EN INTERNET, EL VEHICULO ESTA EN LA CDMX MEXICO.

NHTSA ODI 11444732

Working with the data? Download all 32 complaints as CSV · fetched from NHTSA July 18, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2020 Mazda Mazda3 Sedan verdict →