2019 Mazda Mazda3 Problems: 4 Known Issues
2019 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated October 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2019 Mazda Mazda3 has 4 documented known issues, with 2 rated critical. The most serious are 2019-2020 Mazda3 Smart Brake Support False Activation - Unwanted Emergency Braking (Recall 19V907 / 4219L) ($0-$0 repair) and 2019 Mazda3 2.5 Skyactiv-G Cylinder-Deactivation Rocker Arm Dislodges - Misfire and Stall (Recall 19V497) ($0-$0 repair). Across all issues with published estimates, repair costs range from $400 to $1,000. DIY maintenance guides at au7o.io.
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All 4 Known Issues
NHTSA Recalls4 recalls
AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE:SOFTWARE
Mazda North American Operations is recalling certain 2024-2025 Mazda3 and CX30 vehicles. The Sophisticated Air Bag Sensor (SAS) units may set an error code and deactivate the air bags, due to a low battery condition.
TIRES:VALVE
Mazda North American Operations (Mazda) is recalling certain 2021 Mazda3 and CX-30 vehicles. Air may suddenly leak from the tire air valve.
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Mazda North American Operations (Mazda) is recalling certain 2024 CX-90 and MAZDA3 vehicles. Due to a software error, the rearview, front, and/or side camera images may not appear on the display. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
LANE DEPARTURE: SENSING SYSTEM: CAMERA
Mazda North American Operations (Mazda) is recalling certain 2024 Mazda 3, CX-30, and 2025 CX-50 vehicles. A malfunction in the forward sensing camera (FSC) may prevent the automatic emergency braking system and the lane-keep assist system from functioning. In addition, the headlights will not automatically adjust from high beams to low beams as intended.
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Frequently Asked Questions
What are the most common Mazda Mazda3 problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2019 Mazda Mazda3 has 4 documented issues. The most frequently reported are: 2019-2020 Mazda3 Smart Brake Support False Activation - Unwanted Emergency Braking (Recall 19V907 / 4219L), 2019 Mazda3 2.5 Skyactiv-G Cylinder-Deactivation Rocker Arm Dislodges - Misfire and Stall (Recall 19V497), 2019-2022 Mazda3 Mazda Connect Blank Screen, Freeze, or Reboot. Of these, 2 are rated critical and should be addressed promptly.
Is the Mazda Mazda3 reliable?
The 2019 Mazda Mazda3 has 4 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: 2019-2020 Mazda3 Smart Brake Support False Activation - Unwanted Emergency Braking (Recall 19V907 / 4219L) and 2019 Mazda3 2.5 Skyactiv-G Cylinder-Deactivation Rocker Arm Dislodges - Misfire and Stall (Recall 19V497). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Mazda Mazda3 problems?
Repair costs for known Mazda Mazda3 issues range from $0 to $1,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 2019-2020 Mazda3 Smart Brake Support False Activation - Unwanted Emergency Braking (Recall 19V907 / 4219L), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2019-2020 Mazda Mazda3 2019-2020 Mazda3 Smart Brake Support False Activation - Unwanted Emergency Braking (Recall 19V907 / 4219L)?
Incorrect programming in the Smart Brake Support (SBS) control software on early BP-generation Mazda3s causes the forward-sensing system to falsely detect an obstacle where none exists. The automatic emergency braking then fires at speed, complete with the collision warning chime… Repairs typically run $0-$0. Severity: high.
What is the 2019 Mazda Mazda3 2019 Mazda3 2.5 Skyactiv-G Cylinder-Deactivation Rocker Arm Dislodges - Misfire and Stall (Recall 19V497)?
The 2.5L Skyactiv-G with cylinder deactivation uses hydraulic valve clearance adjusters to drop and re-engage two cylinders. A PCM software fault in the control of those adjusters during the transition back from deactivated to full four-cylinder operation can let an intake valve… Repairs typically run $0-$0. Severity: high.
What is the 2019-2022 Mazda Mazda3 2019-2022 Mazda3 Mazda Connect Blank Screen, Freeze, or Reboot?
Mazda published separate service paths for some 2019-2022 Mazda3 Mazda Connect complaints. Bulletin 16-001/23 covers a defined set of software symptoms on specified non-turbo VIN and production ranges, including a black or frozen display, rebooting, switch or audio-control faults… Severity: medium.
What is the 2019-2025 Mazda Mazda3 Windshield Spontaneous Stress Cracking?
Fourth-generation Mazda3 (BP) owners report an unusually high rate of windshield stress cracks that appear without any visible impact point. The cracking typically originates from the edges of the windshield, often near the A-pillar or bottom edge, and spreads across the glass. T… Repairs typically run $400-$1,000. Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.