Head-to-head reliability
Mazda Mazda3 vs Mazda Mazda6
How the Mazda Mazda3 and Mazda Mazda6 compare on NHTSA complaints, recalls and crash reports — and which is the lower-risk used buy.
Based on NHTSA owner-complaint & recall records
Mazda Mazda3 vs Mazda Mazda6: The Mazda3 averages 41.5 complaints per year with 19 recalls, while the Mazda6 averages 53.9 complaints per year with 22 recalls. The Mazda3 has 2 deaths reported, the Mazda6 none. Both show electrical and engine issues. Source: NHTSA owner complaints.
The picture
Is the Mazda Mazda3 or Mazda Mazda6 more reliable?
A plain-English read on what the NHTSA record says about living with each vehicle.
Mazda Mazda3
The Mazda Mazda3 is a compact car that has averaged 41.5 complaints per year over the past decade, with 19 recalls. Owners frequently report electrical glitches, engine noises, and unexpected forward collision avoidance activations. While it has fewer complaints per year than the Mazda6, the Mazda3 has a higher number of crash-related complaints (27) and two deaths reported, which may concern safety-focused buyers.
Mazda Mazda6
The Mazda Mazda6 is a midsize sedan with a higher complaint rate of 53.9 per year and 22 recalls over ten years. Common issues include electrical system failures, engine problems, and brake noises. It has more crash-related complaints (37) and injuries (27) than the Mazda3, but no deaths have been reported in the data.
The numbers
Side-by-side NHTSA record
Lower is better in every category. The highlighted cell is the stronger result.
| Category | Mazda Mazda3 | Mazda Mazda6 |
|---|---|---|
| Total complaintsAll model years combined | 415 Better | 539 |
| Safety recallsFederal recall campaigns | 19 Better | 22 |
| Crash reportsCrash-related complaints | 27 Better | 37 |
| Complaints per yearAveraged across model years | 41.5 Better | 53.9 |
| Reported injuriesTied to owner complaints | 14 Better | 27 |
| Reported deathsTied to owner complaints | 2 | 0 Better |
Source: NHTSA owner complaints & recall records.
What actually goes wrong
The problems owners report
The most-complained-about systems on each vehicle — what fails, and what owners say in their own words.
Mazda Mazda3
- 01UNKNOWN OR OTHER90
- 02ELECTRICAL SYSTEM83
- 03ENGINE52
- 04FORWARD COLLISION AVOIDANCE48
- 05SERVICE BRAKES39
Owners report complete failure of the infotainment system (Connectivity Master Unit) with diagnostic code U3000:49, leaving the display blank. Others mention backup cameras failing after dealership visits. These electrical gremlins can be costly and frustrating.
Complaints include sudden loud bangs, engine malfunction warnings, and low oil levels requiring frequent top-offs. One owner heard a bang and saw electrical and engine warnings, suggesting potential mechanical or sensor issues.
The system may activate unexpectedly, causing sudden braking or revving without acceleration. Owners describe RPM spikes and ABS warnings, which could lead to loss of control or rear-end collisions.
Brake-related complaints include grinding noises and issues after recall repairs. These can affect stopping performance and safety.
“The contact's daughter had rented a 2023 Mazda Mazda 3. The contact stated that while his daughter was driving at approximately 70 MPH, the vehicle veered off to the left side of the highway and side-swiped a cable system; the vehicle then crashed into the en…”
“I was denied work on a network issue recall 3 separate times at the dealership I bought the car. The first time I was told it was because of a smell. If I clean the car, they will fix it. I noticed after they were in the car my backup camera didn’t work which…”
Mazda Mazda6
- 01ELECTRICAL SYSTEM101
- 02UNKNOWN OR OTHER89
- 03ENGINE79
- 04SERVICE BRAKES60
- 05AIR BAGS51
Owners report high RPMs, sudden downshifts, and loss of power to navigation and radio, along with traction control and check engine lights. These electrical faults can cause unpredictable driving behavior.
Complaints include overheating, low oil pressure lights shortly after oil changes, and coolant control valve failures. These issues can lead to engine damage if not addressed promptly.
Grinding sounds after brake recall repairs and general brake noise are reported. This may indicate improper repairs or premature wear.
Air bag complaints, including frontal passenger inflator module recalls, are noted. Faulty air bags may not deploy correctly in a crash.
“THIS CAR IS NOT SAFE AND MAZDA HAS KNOWN FOR YEARS. THE DOOR SASH MOLDING HAS CAUSED ME PERMANENT BRAIN DAMAGE. AT AGE 43, I HAD TO RETIRE/DISABILITY DUE TO DEFECTS MAZDA KNEW OF AND JUST INFORM CONSUMER OF IN 2018? I WAS MAKING RIGHT HAND TURN, LEGALLY. SOME…”
“My RPM'S reaved up real high while driving 60mph and all the sudden the car down shifted and I had to put car in neutral in order maintain control. The traction control light and heck engine lights came on same time, lost power to the car the navigation and r…”
Official recalls
Safety recalls on record
Federal recall campaigns — the defect, the risk, and the fix. Confirm any open recall was completed before you buy.
Mazda Mazda3 — 19 recalls
The defect: 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 n…
The risk: A camera that does not display an image can reduce the driver's view, increasing the risk of a crash or injury.
The fix: Dealers will update the view monitor control module software, free of charge. Owner notification letters were mailed December 20, 2023. Owners may contact Mazda customer service at 1-800-222-5500 Option 6. Mazda's number for this recall is…
The defect: 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 auto…
The risk: Automatic braking, steering assist, and headlight control systems that do not function as intended can increase the risk of a crash.
The fix: Dealers will inspect and replace the forward sensing camera as necessary, free of charge. Owner notification letters were mailed September 24, 2024. Owners may contact Mazda customer service at 1-800-222-5500, Option 6. Mazda's number for…
The defect: 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.
The risk: Air bags that do not deploy in the event of a crash increase the risk of injury.
The fix: Dealers will reprogram the SAS unit with improved software or replace the unit, free of charge. Owner notification letters were mailed July 24, 2025. Mazda's number for this recall is 7525E.
The defect: 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.
The risk: Stopping the vehicle unexpectedly increases the risk of a crash.
The fix: 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…
Mazda Mazda6 — 22 recalls
The defect: 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.
The risk: An unexpected stall increases the risk of a crash.
The fix: 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.
The defect: Mazda North American Operations (Mazda) is recalling certain 2014-2015 Mazda6 and 2014-2016 Mazda3 vehicles. Water could possibly enter the brake caliper causing the parking brake actuator shaft to corrode and possibly bind.
The risk: If the parking brake actuator shaft binds, the parking brake may not engage or disengage fully. If the parking brake does not engage properly, the vehicle may move unexpectedly if it is parked on a slope, increasing the risk of a crash.
The fix: Mazda will notify owners, and dealers will check the parking brake actuator shafts, replacing any that are corroded, free of charge. Remedy parts are currently unavailable. Interim notices informing owners of the safety risk were mailed Au…
The defect: Mazda North America Operations (Mazda) is recalling certain model year 2014 Mazda3 vehicles manufactured June 12, 2013, through December 18, 2013, and model year 2014-2015 Mazda6 vehicles manufactured May 20, 2013, through December 4, 2013, and both equipped with a 2.5L engine and a regenerative en…
The risk: Once the PCM assumes that the charging system has failed, the vehicle will stop charging and could result in poor acceleration, loss of steering assist and windshield wiper operation, and a possible engine stall, increasing the risk of a c…
The fix: Mazda will notify owners, and dealers will reprogram the PCM with updated software, free of charge. The recall began on May 19, 2014. Owners may contact Mazda at 1-800-222-5500. Mazda's number for this recall is 7314D.
The defect: Mazda North American Operations (Mazda) is recalling certain model year 2014-2015 Mazda6 vehicles manufactured October 25, 2012, to October 10, 2014. If the pressures of four of the tires on an affected vehicle gradually drop at the same time, the tire pressure monitoring system (TPMS) may not warn…
The risk: A vehicle that is driven with under inflated tires may experience a sudden tire failure, increasing the risk of a crash.
The fix: Mazda will notify owners, and dealers will update the TPMS software, free of charge. The recall began on December 10, 2014. Owners may contact Mazda customer service at 1-800-222-5500.
Buyer analysis
Mazda Mazda3 or Mazda Mazda6: which should you buy?
The Mazda Mazda3 has fewer complaints per year (41.5 vs. 53.9) and fewer total recalls (19 vs. 22) than the Mazda Mazda6. However, the Mazda3 has two reported deaths, while the Mazda6 has none. In practice, the Mazda3 may have slightly fewer overall issues, but the severity of outcomes differs.
Key differences
- The Mazda3 has 41.5 complaints per year vs. 53.9 for the Mazda6, indicating fewer reported issues annually.
- The Mazda3 has 2 deaths and 14 injuries in crash-related complaints, while the Mazda6 has 0 deaths and 27 injuries.
- Electrical system issues are the top complaint for both, but the Mazda3 often involves infotainment failures, while the Mazda6 includes power loss and downshifting.
- The Mazda6 has more air bag complaints and recalls, including frontal passenger inflator modules, which are not highlighted for the Mazda3.
- Check the infotainment system for complete failure or blank screen, as owners report CMU internal electronic failure (DTC U3000:49).
- Listen for engine noises or bangs and verify oil levels, as some owners report sudden engine malfunctions and low oil.
- Test drive for sudden RPM spikes, downshifts, or loss of power, which owners link to electrical system faults.
- Inspect for coolant leaks or overheating signs, as engine overheating and coolant control valve issues are reported.
Before you buy
- Obtain a full vehicle history report to see if recalls (e.g., backup camera, air bags, brakes) were performed.
- Have a mechanic inspect the electrical system, including infotainment and battery/alternator, for both models.
- Check for signs of engine oil consumption or leaks, and review maintenance records for oil changes.
- Test all safety systems: forward collision avoidance, automatic emergency braking, and backup camera.
- Verify that any open recalls are addressed before purchase, especially brake and air bag recalls.
Year by year
Which model years to avoid
Complaints per model year for both vehicles — lower is better. The spikes are the years to scrutinize.
| Year | Mazda Mazda3 | Mazda Mazda6 |
|---|---|---|
| 2021 | 52 | 17 |
| 2020 | 32 | 2 |
| 2019 | 74 | 6 |
| 2018 | 108 | 58 |
| 2017 | 83 | 60 |
Check the actual car
Comparing models is smart. Checking the VIN is essential.
Brand averages tell you the trend. A VIN check tells you what's wrong with the specific Mazda Mazda3 or Mazda Mazda6 in front of you — accident history, open recalls and title records.
Go deeper
Full reliability reports
- Comparison
- Mazda Mazda3 vs Mazda Mazda6
- Mazda Mazda3 total complaints
- 415
- Mazda Mazda6 total complaints
- 539
- Mazda Mazda3 total recalls
- 19
- Mazda Mazda6 total recalls
- 22
- Mazda Mazda3 avg complaints/year
- 41.5
- Mazda Mazda6 avg complaints/year
- 53.9
- More reliable overall
- Mazda Mazda3
- Mazda Mazda3 top complaint area
- UNKNOWN OR OTHER
- Mazda Mazda6 top complaint area
- ELECTRICAL SYSTEM