Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2012 Mazda Mazda3 owners, lightly cleaned up (personal details are redacted by NHTSA).
When driving at night with exterior lights on, when brake and or gas pedal is pressed the exterior lights strobe/flashes. The Mazda dealership has been contacted about this issue and there is a technician service bulletin stating that the ECM needs to be reflashed/programmed. No recall has been set for this issue and the Mazda dealership stated that I would have to pay $265 out of pocket to have the problem fixed. I believe that because it's a problem with there programming or software that the company should have to issue a safety recall and fix the factory defect. I'm currently in the process of filing a lawsuit against Mazda because of this and I have already filed a complaint with the better business bureau for this issue.
Using my headlamps at night when I break my headlamps begin to flash, as to dim and brighten I took it into the dealership because it was a recall that my Vin number was not part of. They refused to take care of it without a fee. I reported it to Mazda of North America but because the cars older it falls outside of what they would normally do to take care of it. In short, The braking system causes the headlamps to brighten and dim down. I use country Roads, this could become a hazard. Im concerned it could completely go out at some point and leave me in the dark and create an accident
[redacted] covers a safety oriented problem with my car. Jim Ellis Mazda in Marietta refuses to work on my car because it is more than 10 years old. This is a proprietary issue since it deals with the computer system in the car.
2012 Mazda3i 5dr hatchback. Persistent issue with headlights, both low beam and high beam, as well as interior lighting and other lighting. The headlights flicker for several seconds any time the brake pedal is applied. Interior lighting also flickers when brake pedal is applied. Headlights sometimes flicker when vehicle is decelerating and no brake pedal is applied, most notable when vehicle is traveling downhill. Further, the luminosity (brightness) of the headlights visibly dims, but does not flash, when the vehicle is parked and the brake pedal is applied. A high volume of others report the same issue, including documented complaints. These vehicles are unsafe, defective as designed, and do not conform to FMVSS No. 108. NHTSA must investigate further. Many other owners are not aware of the cause of the issue and attempt to fix it by replacing headlights, alternator, etc. …
Purchased this vehicle on aug 27th 2014 as a used vehicle and did the initial test drive during the day. A few days later while driving at night I decelerated while on the highway (speed is 55mph) to come to a complete stop at a 4 way intersection. The moment brakes are applied the front headlights flicker and continue to do so until fully stopped. I've tested this at multiple speeds and road types and it happens each time. We live in a heavily populated area with plenty of children as well as wild life and this decreases my chances of seeing them if they run out (even while braking, say if I was doing so slowly a child run out I can e-brake or apply more pressure to brakes to stop quicker...can't do that if I don't see them in time). It also is extremely distracting and annoying. …
Car hit coyote at 75mph. Car never wavered from what it was supposed to do. It saved our lives that night. Headlight not hit by coyote but bares a large "blind spot" on drivers side making car unsafe to drive after dark. Car taken to dealership, dealership says head light is within specs and was compared to another car of the same make and model year and the "blind spot" is normal. This particular Mazda 3 "doesn't like tires". That is what the guy who put on the 3rd full set of tires told me. Mileage 46,000 the car keeps breaking motor mounts and Mazda claims this is all from the accident now 15 months ago. They refuse to fix headlight and I have been told not to drive the car after dark as my insurance company May fight if I should have an accident due to the faulty head light. …
Headlights flicker/pulsate when applying brakes. This is a well known issue with 2012-13 Mazda3 that requires a software update to remedy. Currently, Mazda is charging a minimum of $99 to 'diagnose' the issue. Since the issue occurs in motion, I do not have photos, but I do have videos. Given that this is a safety issue caused by faulty software that only Mazda can update, there is no reason that owners should have to pay them to fix their own mistake. It's a scam, at best. Documentation of others with same issue and consistent software update solution: https://www.mazdaforum.com/forum/Mazda3-26/Mazda-3-headlights-flickering-pulsating-when-braking-34536/ https://www.google.com/amp/s/amp.reddit.com/r/Mazda3/comments/6aaeik/20122013_headlight_flickering_solution/ - this link includes a Mazda Canada service bulletin, indicating that the company is fully aware of the issue …
High beam lights blink/flash when breaking low beam lights dim when breaking instrument lights dim slightly when breaking with both conditions mentioned. Also I had the alteernator checked and it is working like it should. I found other people have had same problem with same year make and model. I am 2nd owner the person who bought it new didnt drive it much and didnt drive it at night so they never knew it had issues. The people with the issues was able to get it fixed free since they bought it new and had the issue happen to them. Seams there would of been a recall out to have this fixed and most dealers know what the problem is. But not the one I took my car to since it is a newer dealer.
My headlight housing has condensation and that in turn has caused my HID lights to fail. I have read over an over that Mazda's from 2010-2011 have this particular problem. Why do they not take this issue seriously. I was told by a Mazda in lexington, ky that this would cost me in excess of $600.00 to replace. Why does this still continue to be a problem. Anytime it rains there is more condensation build up. The passenger side was affected first now it appears as though the driver side is starting to have build up of condensation, which will ultimately cause a failure with the HID. So instead driving with one headlight and fog lights (which the fog lights help) I will have no headlights.
There has always been a massive voltage drop when slowing down or lowering speed. Happens consistently in all driving conditions, highway/city, nighttime/daytime. This leads to all interior lights and more importantly, headlights dimming and flashing whenever the engine speed drops. This often means at nighttime when going around corners visibility is nearly zero until the lights come back on after a few seconds. Electrical systems are all fine with inspection. Upon googling it, appears to be a common problem and software related.
Headlight complaints in other Mazda3 years
Frequently asked questions
How common are headlight problems on the 2012 Mazda Mazda3?
NHTSA has 31 complaints about the lights of the 2012 Mazda Mazda3, 14% of the model year's 226 complaints.
Is there a recall for 2012 Mazda Mazda3 headlight problems?
No. NHTSA lists no lights recall for the 2012 Mazda Mazda3, though it has 1 recall for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2012 Mazda Mazda3 headlight problems start?
Half of the complaints with a recorded mileage happened before about 60,000 miles, and 16% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 0 injuries to lights problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.