The Used Car Index

2021 Mazda MAZDA6 problems

NHTSA lists 17 complaints for the 2021 Mazda MAZDA6, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.

Data build 2026-10-09.

NHTSA lists this vehicle as MAZDA MAZDA6.

At a glance

Complaints
17
With crash
0
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
0
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
Unavailable
Investigations
0
Open investigations
0
Manufacturer communications
301

Complaints per 100k sold unavailable. The available sales group does not match this vehicle variant.

Where the complaints are

Top systems
SystemComplaintsShare of this vehicle's complaints
ENGINE1376.5%
UNKNOWN OR OTHER211.8%
VISIBILITY/WIPER211.8%
BACK OVER PREVENTION15.9%
FUEL/PROPULSION SYSTEM15.9%
Top subsystems
SystemSubsystemComplaints
BACK OVER PREVENTIONSENSING SYSTEM1

One complaint can name several systems, so shares can add to more than 100 percent.

Model-generated complaint tags

These labels are model-generated, not NHTSA data.

Failure modes
LabelCountShare of taggedMean confidence
mechanical failure847.1%0.72
fluid or fuel leak635.3%0.62
visibility or lighting211.8%0.88
electrical electronic15.9%0.33
Severities
LabelCountShare of taggedMean confidence
low1376.5%0.88
moderate423.5%0.87

Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 17 tagged complaints of 17 complaints (100.0%).

Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.

Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.

Recalls

See new recalls and investigations this week.

0 recalls.

Investigations

0 investigations; 0 open.

Manufacturer communications

301 manufacturer communications.

Communications by system
SystemCount
ELECTRICAL SYSTEM82
ENGINE61
EQUIPMENT59
ENGINE AND ENGINE COOLING45
UNKNOWN OR OTHER44
POWER TRAIN24
STRUCTURE18
WHEELS15

11037899

Date: 2026-09-11. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

DESCRIPTION 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 installed. Aftermarket devices may be the cause of the electrical con

11034447

Date: 2026-06-19. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, ENGINE.

This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION 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 ask

11034436

Date: 2026-06-18. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, ENGINE, UNKNOWN OR OTHER.

This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 09-012/21 12/13/21, 06/10/21 and 04/27/21 DESCRIPTION Some customers may experience all of following symptoms: The door lock/unlock operation will not work using the remote transmitter button. 1. T

11034439

Date: 2026-06-17. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

This SA supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red. SA-027/26 04/16/26 DESCRIPTION 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 replac

11032104

Date: 2026-04-30. Type: Service Bulletin/Repair Instructions. Systems: STRUCTURE, UNKNOWN OR OTHER.

DESCRIPTION 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

11032106

Date: 2026-04-29. Type: Warranty Program/Extension. Systems: ENGINE.

Valve Stem Seals Class Action Settlement Program for Excessive Oil Consumption and Oil Consumption Powertrain Warranty Extension Special Service Program SSPD5. Updated April 28, 2026 a Related oil part number for warranty claims is now 0000-77-5W30-QT (engine oil) as the 5555 warranty part number

11032103

Date: 2026-04-21. Type: Service Bulletin/Repair Instructions. Systems: ENGINE, POWER TRAIN, SERVICE BRAKES, UNKNOWN OR OTHER.

This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the sch

11032101

Date: 2026-04-16. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.

This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-002/19 09/30/19 and 12/19/19 DESCRIPTION If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a repla

11032102

Date: 2026-04-15. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

This SA supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red. SA-007/25 10/22/25, 06/02/25 and 02/03/25 DESCRIPTION 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 unn

11032100

Date: 2026-04-04. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, STRUCTURE.

This Service Alert supersedes the previously issued SAs and bulletin(s) listed below: The changes are noted below in red. SA-010/23 02/09/23 DESCRIPTION Some customers may experience one or more electrical malfunctions after a vehicle body repair. A newly painted fender stay (2) may be causing a poo

Notes on this record

  • Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
  • System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
  • Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
  • A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.

Other names NHTSA uses

None listed.

Matched NHTSA models

Matched labels and complaints
NHTSA model labelComplaints
MAZDA617

Same model, other years

All model years | All Mazda models

Other Mazda models, 2021

Sources

Get this record as JSON

The free rate-limited demo needs no key.

curl "https://api.theusedcarindex.com/v1/demo/vehicle_risk?make=Mazda&model=MAZDA6&year=2021"

Paid endpoint: https://api.theusedcarindex.com/v1/vehicle_risk. MCP endpoint: https://api.theusedcarindex.com/mcp.