AI Damage2020 Mazda Mazda6: common problems
Owners of the 2020 Mazda Mazda6 filed 2 complaints with NHTSA, most often about engine and service brakes. The maker issued 347 service bulletins for this year. We found 1 repair videos on YouTube. Details by component below, with sources.
Key figures
- Owner complaints
- 2
- Technical service bulletins (TSB)
- 347
- YouTube repair videos
- 1
What fails most often
- 1 Engine 50% of all complaints
- 2 Service brakes 50% of all complaints
- 3 Structure 50% of all complaints
- Engine: 1 complaints (50% of all); manufacturer bulletins for this component: 51.
- Service brakes: 1 complaints (50% of all); manufacturer bulletins for this component: 23.
- Structure: 1 complaints (50% of all); manufacturer bulletins for this component: 19.
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 1 | 0 | 51 |
| Service brakes | 1 | 0 | 23 |
| Structure | 1 | 0 | 19 |
| Equipment | 0 | 0 | 98 |
| Electrical system | 0 | 0 | 91 |
| Engine and cooling | 0 | 0 | 63 |
| Powertrain | 0 | 0 | 29 |
| Steering | 0 | 0 | 16 |
| Seats | 0 | 0 | 13 |
| Wheels | 0 | 0 | 12 |
| Visibility | 0 | 0 | 11 |
| Forward collision avoidance | 0 | 0 | 5 |
| Suspension | 0 | 0 | 5 |
| Exterior lighting | 0 | 0 | 3 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Uneven premature brake wear. Right front and right rear pads and rotors worn beyond limits in 28,000miles of lite freeway driving. Left front and Left rear only half worn. Engine has multiple oil leaks.
Excessive paint chipping. I have the soul red (v46) paint. It was purchased on 06jun2020 and has only 2,000 miles but it has 3 large chips. Most of the miles are just going to the store. I work from home so I don't drive but a couple days a week.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 19,879 of 36,656 model years in the NHTSA data (among the 46% least complained about).
On average one model year of the Mazda6 has 112 complaints (20 years in the data). This year has 2, below average.
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...),…
If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been…
- The Mazda DCA-8000 is required for all warranty battery testing
If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a…
- Some customers may experience all of following symptoms
The door lock/unlock operation will not work using the remote transmitter button. 1. The door lock/unlock operation will not work using the door lock/release touch sensor. 2. The engine will not start using the…
- Some vehicles may require the replacement of a damaged VIN plate or vehicle certification label
To obtain a replacement VIN plate (bulkhead-mounted and visible through the lower-left area of the windshield), contact DAG (Dealer Assistance Group) using VIN Plate Request Form available on One Mazda. To obtain a…
- Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems
Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not…
- If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake…
If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the intake manifold is not cleaned properly…
- Some customers may experience one or more electrical malfunctions after a vehicle body repair
A newly painted fender stay (2) may be causing a poor front harness (1) ground connection. The front fender stay (2) newly painted surface at ground point (3), where attachment bolt (4) is seated, may create a poor…
- Some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the drive belt…
Some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the drive belt auto tensioner. This may be caused by insufficient sealing at the drive belt auto tensioner damper when the auto…
- TSB 01-001/26 Warranty and Parts Kit Update
INCLUDES: Warranty Extension Program - Special Service Program (SSP) D8 Check Engine Light ON with DTC P0126:00, 2018-2025 CX-5, 2019-2023 Mazda3, 2019-2022 CX-3, 2018-2021 Mazda6, 2020-2023 CX-30 Dear Mazda Dealer…
- There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very…
There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very small coolant leak from the bleed hole. This Service Alert is to inform you about the water pump sealing mechanism…
- Some customers may experience a check engine light ON with DTC P0126
00 (Thermostat stuck open) and one or more of the following symptoms: Engine takes longer to warm up. Engine temperature gauge fluctuates. Low coolant temperature indicator (blue) light stays on longer or turns on…
- SSPD8 - Check Engine Light ON with DTC P0126
00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for…
NHTSA lists 347 bulletins for this year; the 12 newest are shown here.
Repair videos
We do not copy videos: these are YouTube links credited to their authors. Amounts are as stated by the author and not verified by us.
Other years of this model
- Mazda6 200228 sources
- Mazda6 2003174 sources
- Mazda6 2004160 sources
- Mazda6 2005147 sources
- Mazda6 2006173 sources
- Mazda6 2007156 sources
- Mazda6 2008111 sources
- Mazda6 2009386 sources
- Mazda6 2010225 sources
- Mazda6 2011135 sources
- Mazda6 2012100 sources
- Mazda6 201323 sources
- Mazda6 2014137 sources
- Mazda6 201560 sources
- Mazda6 2016547 sources
- Mazda6 2017368 sources
- Mazda6 2018417 sources
- Mazda6 2019355 sources
- Mazda6 2021319 sources
Questions and answers
What are the most common problems with the 2020 Mazda Mazda6?
Owner complaints to NHTSA most often mention: engine, service brakes, structure. Total complaints: 2. The most frequent symptoms in complaint texts: oil leak or consumption (50%).
How many service bulletins (TSB) were issued for the 2020 Mazda Mazda6?
NHTSA lists 347 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2020 Mazda Mazda6 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2020 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.