2019 Mazda Mazda3

The 2.5L Skyactiv-G engine burns oil at an abnormal rate due to defective exhaust-side valve stem seals that allow oil into the combustion chamber. Low oil level warnings appear as early as 3,100 miles after an oil change without any visible leaks under the vehicle.

Mazda issued TSBs acknowledging the issue. The temporary fix is regular oil top-offs. The permanent repair involves replacement of all exhaust-side valve stem seals. Mazda has not issued a formal recall despite hundreds of NHTSA complaints.

A grinding noise and vibration occur when applying the brakes, caused by excessive rust buildup on the rear brake disc plates. This is particularly common in humid climates or after the vehicle sits overnight, and is more than normal surface rust.

A Mazda TSB addresses the rear brake disc rust issue. Light driving with gentle braking may clear surface rust. In severe cases, the rear rotors require resurfacing or replacement with updated brake components.

The airbag warning light illuminates or cycles on and off intermittently with specific diagnostic trouble codes. This can indicate a fault in the occupant classification system, seat belt pretensioner circuit, or airbag module connector.

Diagnostic scan to identify the specific DTC. Connector inspection and cleaning at the seat-mounted sensors. A Mazda TSB provides procedures for specific airbag DTCs. Sensor or module replacement if the fault is confirmed.

The fuel door fails to open when the release button is pressed, preventing the owner from refueling the vehicle. The issue is caused by a faulty fuel door release actuator or a binding condition in the fuel door hinge mechanism.

A Mazda TSB addresses the stuck fuel door with replacement of the fuel door release actuator and lubrication of the hinge mechanism. An emergency manual release lever inside the trunk provides temporary access.

The Lane Departure Warning system display does not function properly when the Mazda Connect infotainment system language is set to Spanish. The visual alerts and icons fail to render correctly, reducing the effectiveness of the safety feature.

A Mazda TSB provides a software update to the Mazda Connect system that corrects the Lane Departure Warning display rendering in Spanish language mode. Setting the language to English is a temporary workaround.

Mazda North American Operations (Mazda) is recalling certain 2019-2020 Mazda3 vehicles. The Smart Brake System (SBS) can falsely detect an obstacle while driving, activating the automatic emergency braking system and suddenly stopping the vehicle.

Stopping the vehicle unexpectedly increases the risk of a crash.

Mazda will notify owners, and dealers will update the SBS software. In addition, vehicles with certain production dates will receive an instrument cluster software update or replacement and a replacement owner's manual. These repairs will be performed free of charge. The recall began February 14, 2020. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 4219L.

Mazda North American Operations (Mazda) is recalling certain 2019 Mazda3 vehicles equipped with manual dimming mirrors. The adhesive between the interior rearview mirror and the housing may not be properly bonded, allowing the mirror to detach from the housing. Note: Vehicles equipped with auto dimming mirrors are not affected by this recall.

Rearward visibility will be reduced without the rearview mirror, increasing the risk of a crash.

Mazda will notify owners, and dealers will replace the interior rearview mirror assembly, free of charge. The recall began September 19, 2019. Owners may contact Mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 3919G.

Mazda North American Operations (Mazda) is recalling certain 2019 Mazda3 vehicles. The seat cover material on both front seats may interfere with the head restraint lock release button, causing it to stick in the release position and not allow the head restraint to lock into place.

Loose head restraints may increase the risk of injury in the event of a crash.

Mazda will notify owners, and dealers will install spacers at the bottom of the lock release buttons on both front seat head restraints, free of charge. The recall began August 20, 2019. Owners may contact Mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 3819F.

Mazda North American Operations (Mazda) is recalling certain 2018-2019 CX-5, Mazda6, and 2019 Mazda3 vehicles. A software error in the powertrain control module (PCM) may cause the engine to stall.

An unexpected stall increases the risk of a crash.

Mazda will notify owners, and dealers will reprogram the PCM software, free of charge. The recall began August 20, 2019. Owners may contact Mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 3719F.

Mazda North American Operations (Mazda) is recalling certain 2019 Mazda3 vehicles. The lug nuts on all four wheels may loosen, potentially resulting in a wheel detaching from the vehicle.

A wheel separating from the vehicle increases the risk of a crash.

Mazda will notify owners, and dealers will tighten the front and rear wheel lug nuts to the correct specification, free of charge. The recall began July 9, 2019. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 3519F.

Mazda North American Operations (Mazda) is recalling certain 2019 Mazda3 vehicles. Due to incorrect programing, the passenger air bag deactivation indicator light may erroneously turn off although the passenger air bag is deactivated. In addition, the seat belt status indicators for both the front passenger seat and/or rear seats may erroneously turn off although the front passenger and/or rear seat belts are unfastened.

Incorrect indicator warning lights may lead the driver and/or passengers to be unaware of deactivated air bags or unfastened seat belts, increasing the risk of injury.

Mazda will notify owners, and dealers will replace the passenger air bag/seat belt status indicator assembly, free of charge. The recall began July 9, 2019. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 3319E.