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2021 Mazda Mazda6

Gas
Midsize Cars
2 EPA-rated configurations
Data refreshed 2026-10-26
A
Safety Signal
100 / 100 from the NHTSA recall record
RecallsNHTSA campaigns 0
Complaintsnone reporting a crash, fire or injury 17
Crash ratingNHTSA overall 5★
Fuel economybest combined, EPA 29 mpg
202120202019201820172016

The 2021 Mazda Mazda6 is sold in the U.S. as a gas midsize sedan with 2 EPA-rated configurations. The most efficient version, the 6, is EPA-rated at 29 mpg combined. NHTSA lists no recall campaigns for this model year so far (Safety Signal A). Owners have filed 17 complaints, most often about the engine. NHTSA crash-tested it at 5 stars overall.

Mazda6 — photograph via Wikimedia Commons
Mazda6 · Photo: Vauxford · CC BY-SA 4.0 · Wikimedia Commons

Specs & fuel economy

Source: EPA fueleconomy.gov
ConfigurationPowertrainDriveEngine / motorCityHwyCombAnnual fuel*
6GasFWD2.5L 4-cyl263529$2,300
6GasFWD2.5L 4-cyl turbo233126$2,600

*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 43300, 43301.

Emissions & certification

Source: EPA emission certificates
ConfigurationSmog ratingEmission standardWhere it can be sold newSmartWay
67 / 10California LEV-III SULEV30 / Federal Tier 3 Bin 30All 50 states (federal, all altitudes); California and states following California standards—
63 / 10California LEV-III ULEV125 / Federal Tier 3 Bin 125All 50 states (federal, all altitudes); California and states following California standards—

Certified for all fifty states, so it can be registered new anywhere in the U.S.

The smog rating scores tailpipe pollutants other than greenhouse gases, 1 (worst) to 10 (best), and is comparable only within a model year. The standard is the federal bin or California tier the configuration was certified to. Both come from the EPA certificate behind the window sticker.

Specifications filed with NHTSA

Source: NHTSA vPIC

Dimensions Exterior

Body styleSedan/Saloon
Doors4
GVWR classClass 1: 6,000 lb or less (2,722 kg or less)

Engine Basics

Cylinders4
Displacement2.5 L
Engine configurationIn-Line

Engine Output

Horsepower227 hp

Fuel Economy

FuelGasoline

Seating

Seat rows2
Seating capacity5 seats

Transmission

Drivetrain4x2
TransmissionAutomatic
Transmission speeds6

Driver assistance

Standard: Adaptive cruise control, Anti-lock brakes, Automatic emergency braking, Backup camera, Blind-spot monitoring, Electronic stability control, Forward collision warning, Lane departure warning, Lane keeping assist, Pedestrian automatic emergency braking, Rear cross-traffic alert

Filed by the manufacturer with NHTSA under the federal vehicle-identification rule and decoded from the VIN pattern — not a manufacturer press kit, so it describes the configurations we could identify rather than every trim (seen: Grand Touring, Grand Touring Reserve, Signature, Sport). Figures for the trim you are looking at may differ.

Dimensions & weight

Source: Transport Canada
Length192.5 in
Width (body, without mirrors)72.4 in
Height57.1 in
Wheelbase111.4 in
Track, front62.6 in
Track, rear62.2 in
Curb weight3,250 lb
Weight distribution, front/rear59/41

Measured by Transport Canada for its Canadian Vehicle Specifications database, which covers the North American versions of each model — here one configuration: 4-door Sedan. Where a range is shown, those versions differ. Width is the body without mirrors, which is why it can read narrower than a brochure figure. Before we used it we checked it against the US manufacturer press kits we hold (27 Sep 2026): wheelbase agreed within 1% on every vehicle we could compare, length on 98%, and the curb weight fell inside the manufacturer's range on 96%. Source dataset. Contains information licensed under the Open Government Licence – Canada. Licence.

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Factory warranty running out?

The 2021 Mazda Mazda6 is in the years where transmission, electronics and drivetrain repairs land on the owner. What an extended plan does and does not cover is worth reading before a dealer quotes you one.

What to check before you buy →

Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.

Recalls (0)

Source: NHTSA recall database

No NHTSA recall campaigns are on file for the 2021 Mazda Mazda6. New campaigns appear here within a week of NHTSA posting them.

These are vehicle campaigns — the ones the automaker filed against this model. NHTSA also records equipment recalls, filed by a parts maker against a component (a tyre, a child seat, an aftermarket part), and those are not listed here or counted above. nhtsa.gov/recalls shows both for a VIN.

Hear about a recall before the letter does

The manufacturer’s letter is the last step of a recall: it has up to 60 days after filing to mail owners, at the address on the registration. We email you the day NHTSA posts a recall on the 2021 Mazda Mazda6, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.

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Parts & accessories for the 2021 Mazda Mazda6

Search by fitment on eBay Motors — OEM take-offs, aftermarket, and the trim pieces dealers no longer stock. The listing and the price are the seller's.

Find parts for this Mazda6 →

Owner complaints

Source: NHTSA complaint database
17complaints filed

0 involved a crash · 0 a fire · 0 injuries · 0 deaths reported

9.4 per 10,000 built · Mazda reported 18,018 Mazda6 built (its Early Warning production report to NHTSA)

Filed per year: 2021: 1 · 2022: 9 · 2023: 5 · 2024: 1 · 2025: 1

Most-cited components

Engine 13
Visibility/Wiper 2
Unspecified 2
Fuel/Propulsion System 1
Back Over Prevention 1

In owners' own words

Filed with NHTSA by the people who own these cars, one per problem area. Quoted as written, with anything identifying removed.

Engine oil low warning 2k miles after oil change and again a week after topping oil off
Engine Dec 17, 2023 NHTSA owner report · ODI 11560526
Sunroof exploded while on the highway. Nothing hit the glass. Glass was facing outward and no evidence if anything striking it. Major safety concern, easily could have blinded my wife or I
Visibility/Wiper Apr 7, 2022 NHTSA owner report · ODI 11459949
The Infotainment system malfunctions. The rear view camera freezes, not with the current conditions but a still picture of a street I do not recognize. This puts not only myself at risk for an accident but those of others as well. This malfunction has been taken into the dealership on two different occasions.
Back Over Prevention Jun 23, 2025 NHTSA owner report · ODI 11668602
Oil Consumption Defect. I bought car on 7/10/21. Mazda aware of the problem at the time and still sold me the car. Since then I have had to add oil in between oil changes. Mazda states problem cannot be fixed. My car vin # included with defected cars. My Limited New Car Warranty will be up soon.
Fuel/Propulsion System Apr 24, 2023 NHTSA owner report · ODI 11518647
My car displayed a low oil level light between oil changes and after checking the dipstick it was low. No sign of visible oil leak so upon further research I was made aware of a TSB about defective valve seals causing excessive oil consumption. My cars VIN is in the affected range outlined in the TSB.
Engine Jun 25, 2023 NHTSA owner report · ODI 11528713
Visibility/safety issue with OEM Mazda windshields. Objects appear highly distorted from all angles, making it hard to judge distance, read road signs, and drive safely without a disorienting level of distraction occurring at all times.
Visibility/Wiper Dec 27, 2021 NHTSA owner report · ODI 11445162

Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.

Reported by Mazda itself: 2 death-or-injury claims on this model year in its quarterly Early Warning reports to NHTSA (49 CFR 579.21): 2 injured, as claimed, not verified — about 11 per 100,000 built. Every Mazda6 model year, by year and system → Dated and by system, they are exhibit F of the defect dossier.

Crash ratings

Source: NHTSA NCAP
ConfigurationOverallFrontalSideRolloverRollover risk
4 DR FWD★★★★★★★★★★★★★★★★★★★☆10%

NHTSA New Car Assessment Program. Standard driver-assist: forward collision warning, lane departure warning, automatic emergency braking.

Service bulletins & campaigns

Source: NHTSA manufacturer communications
Extended coverage on file 3 filings by the manufacturer with NHTSA naming this model year

The term and the vehicles it covers are the manufacturer’s, as NHTSA’s summary of each filing states them; a dealer checks one particular car by its VIN. Every Mazda warranty extension (9) → · Every warranty extension on file, all makes →

Communicationsfiled with NHTSA 301
Most recentmanufacturer date 2026-09-11
Kindsas classified by NHTSA 252 service bulletins, 39 warranty extensions, 10 others

Most often about: Engine, Electrical System, Equipment, Unknown Or Other, Power Train.

  • SA-041-26a Service bulletin
    2026-09-11 · 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 concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices. Example
  • SA-041-26 Service bulletin
    2026-06-19 · 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 asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the elec
  • 09-019-26 Service bulletin
    2026-06-18 · Engine
  • 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. The door lock/unlock operation will not work using the door lock/release touch sensor. 2. The engine
  • SA-027-26a Service bulletin
    2026-06-17 · 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 replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries an
  • SA-031-26 Service bulletin
    2026-04-30 · 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 One Mazda. To obtain a replacement vehicle certification label (located on the B􀀀pillar or front do
  • SSPD5 Parts Warr b Warranty extension
    2026-04-29 · 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 – Related oil part number for warranty claims is now 0000-77-5W30-QT (engine oil) as the 5555 warranty part number has been removed. As a reminder, all coverage reverts back to the original extension of 7 years or 84,
  • SA-029-26 Service bulletin
    2026-04-21 · Engine
  • 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 scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Servic
  • SA-026-26 Service bulletin
    2026-04-16 · 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 replacement engine assembly. If the intake manifold is not cleaned properly, the replacement engine may f

A service bulletin is the manufacturer telling its dealers how to diagnose or repair a known condition. It is not a recall, not a finding that the vehicle is defective, and the work is not automatically free — though a bulletin is often what a dealer works from when you describe a symptom, so quoting the document number can save a diagnosis. The count is every communication filed; the list shows the most recent, one entry per campaign, because a single campaign is usually filed as several documents on the same day. The summaries are NHTSA's; the full documents come from the manufacturer.

Diagnostic trouble codes on file

Source: NHTSA manufacturer communications and complaints

Codes documented against this model year in the federal record. A code appearing here does not mean this vehicle will set it — it means the code is part of this nameplate-year's documented history.

CodeWhat it meansMost often filed underWhere it appears
P0126
P0126 on Mazda →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Engine32 bulletins
P250F
P250F on Mazda →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Engine7 bulletins
P2B61
P2B61 on Mazda →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Engine7 bulletins
B108E
B108E on Mazda →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Equipment3 bulletins
B14F0
B14F0 on Mazda →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Lane Departure3 bulletins
C1001
C1001 on Mazda →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Lane Departure3 bulletins
P0524
P0524 on Mazda →
Engine oil pressure has been measured below the safe limit.Engine3 bulletins
P055F
P055F on Mazda →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Engine3 bulletins
C0023Manufacturer-defined — the meaning is set by the automaker, not the standard.Engine2 bulletins
P0780
P0780 on Mazda →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Power Train2 bulletins
P0842
P0842 on Mazda →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Power Train2 bulletins
P0847
P0847 on Mazda →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Power Train2 bulletins

Generic codes (the second character is 0 or 2) mean the same thing on every vehicle sold in the United States. Manufacturer-specific codes (1 or 3) mean whatever the automaker assigned, and no honest source can define them for you — which is why the ones here carry the evidence instead of a definition. A code is a link when enough separate federal documents name it across the catalogue to be worth a page of its own; the rest are listed here, where the vehicle is the context that makes them mean something.

Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.

At the New York inspection station

Source: New York State DMV

In New York’s inspection lanes over the 12 months to Oct 10, 2026, the 2021 Mazda Mazda6 failed the emissions check on 1.1% of first inspections — lower than the 1.9% for every 2021 model-year vehicle inspected; and the safety inspection on 1.9% (every 2021 vehicle: 1.5%).

New York inspections 1.1%

failed emissions

575 initial inspections of 568 vehicles.

MeasureThe 2021 Mazda6Every 2021 vehicleBehind it
Failed the emissions check1.1%1.9%574
Failed the safety inspection1.9%1.5%575
Air-bag warning lamp stayed lit0.35%0.19%575
Miles driven a year9,65310,343odometer at inspection
Average odometer50,99354,681odometer at inspection

New York’s emissions test on these model years is an on-board diagnostics check: it fails a car whose check-engine light is on or whose self-tests have not finished. First inspections only, so a car that failed and came back is counted once; private and special plates, not taxis, livery or commercial plates. A rate appears only where at least 200 inspections stand behind it. “Every 2021 vehicle” is every 2021 model-year car, SUV and pickup inspected in the same window, all makes. This is the state’s record of test results, not a reliability score by itself. Source: New York State Department of Motor Vehicles, Vehicle Inspections (data.ny.gov, Open NY terms).

Common questions about the 2021 Mazda6

Source: EPA, NHTSA and manufacturer press kits

Does the 2021 Mazda Mazda6 have any recalls?

No NHTSA recall campaigns are on file for the 2021 Mazda Mazda6. New campaigns appear here within a week of NHTSA posting them, and a clean sheet on a recent model year often just means the vehicle is new.

How safe is the 2021 Mazda Mazda6?

NHTSA gave the 2021 Mazda Mazda6 5 stars overall in its New Car Assessment Program tests — 5-star frontal crash, 5-star side crash, 4-star rollover. WhichTrim also grades it A (100/100) on its recall record, which is a different question from crash protection.

What is the fuel economy of the 2021 Mazda Mazda6?

Across the 2 EPA-rated configurations of the 2021 Mazda Mazda6, the best EPA combined figure is 29 mpg. Figures are the EPA's own, per configuration, and every one is listed above.

What are the dimensions of the 2021 Mazda Mazda6?

Transport Canada measured it at 192.5 in long, 72.4 in wide (body, without mirrors), 57.1 in tall, on a 111.4 in wheelbase. Curb weight: 3,250 lb. Those are its measurements of the North American versions; every figure is in the table above.

What do owners complain about on the 2021 Mazda Mazda6?

Owners have filed 17 complaints with NHTSA about the 2021 Mazda Mazda6, most often about engine, visibility/wiper, unspecified. Complaints are unverified owner reports, so treat the pattern as a signal and the individual report as an anecdote.

How clean is the 2021 Mazda Mazda6?

The EPA smog rating for the 2021 Mazda Mazda6 runs 3 to 7 out of 10 across its configurations. That score covers tailpipe pollutants other than greenhouse gases, and it only compares vehicles within the same model year. It is certified for all fifty states, so it can be registered new anywhere in the U.S. Its configurations were certified to different standards — California LEV-III SULEV30, California LEV-III ULEV125, Federal Tier 3 Bin 125, Federal Tier 3 Bin 30 — which the table above lists per configuration.

Are there service bulletins for the 2021 Mazda Mazda6?

The manufacturer has filed 301 service bulletins and related communications with NHTSA for the 2021 Mazda Mazda6, most often covering engine, electrical system, equipment. The most recent is dated 2026-09-11. A bulletin is not a recall: it is the repair procedure a manufacturer sends its dealers for a condition it knows about, and the work is not automatically paid for. It is still worth knowing — if the symptom matches, quoting the bulletin number at the service desk can save a diagnosis. The document numbers and summaries are listed above.

How does the 2021 Mazda Mazda6 do at state inspection?

In New York’s inspection lanes over the 12 months to Oct 10, 2026, the 2021 Mazda Mazda6 failed the emissions check on 1.1% of first inspections — lower than the 1.9% for every 2021 model-year vehicle inspected; and the safety inspection on 1.9% (every 2021 vehicle: 1.5%). The figures are New York State DMV’s own inspection records, first inspections only, and the table above sets each one against every vehicle of the same model year.

What we hold, and what an empty row means

Paid vehicle-history reports will not tell you the difference between “nothing happened to this car” and “we never received that record” — both of the big two say as much in their own help pages. Most of what is on this page comes from complete federal registers, so we can tell you which is which, row by row.

DataHeldSourceWhat it covers — or what empty means
Fuel economy & configurations2 configurationsEPA certification recordsEvery configuration the EPA certified for sale, with its own test figures.
Emission certificates2 configurationsEPA emission certificatesSmog rating, standard and the sales area that decides where the car can be sold new.
RecallsnoneNHTSA recall campaignsNo campaign has been filed. Because the register is complete, an empty row here means there is nothing to find — not that we are missing it.
Owner complaints17NHTSA complaint databaseAlso complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold.
Crash ratings1 testedNHTSA NCAPOnly the configurations NHTSA chose to crash-test, which is never all of them.
Service bulletins301NHTSA manufacturer communicationsEverything the manufacturer told its dealers about a defect or malfunction, short of a recall.
InvestigationsnoneNHTSA Office of Defects InvestigationNo defect investigation has been opened.
Driver-assist crash reportsnoneNHTSA Standing General Order 2021-01No report has been filed. Only entities named in the order report, and only crashes they hear of — so this is also what an unequipped car, or a manufacturer without telematics, looks like.
Specifications filed with NHTSA13 fieldsNHTSA vPIC, decoded from VIN patternsWhat the manufacturer filed under the federal VIN rule — a configuration, not the full trim ladder.
Measured dimensions7 fieldsTransport Canada, Canadian Vehicle SpecificationsLength, width, height, wheelbase, track and curb weight, measured on the North American versions.
Trims, pricing & equipmentnoneManufacturer press kitWe have not transcribed a press kit for this model year yet. This is our gap, not the manufacturer's — the one row here where an empty cell means we are behind.

Rebuilt nightly; this page was generated 2026-10-26. Every figure above is traceable to the source named beside it, and the JSON for this page carries the same values with their identifiers.

Sources & method

Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). The most serious recall counts in full and each further one counts 85% of the one before, because a vehicle sold in millions is recalled more often than a rare one without being more dangerous — and because a flat subtraction bottomed the scale out, scoring a vehicle with 22 recalls within a point of one with six. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Read it as what it counts: recall campaigns on the federal record, weighted by severity. The damping reduces the sales bias by roughly 40% but does not remove it: like our complaint counts, this is not normalized by how many were sold, so a best-seller still scores somewhat worse than an obscure model with the same real risk. NHTSA crash ratings, do-not-drive and park-outside advisories, and the crash, fire, injury and death counts in owner complaints are reported separately on every page and never blended into the letter — a vehicle can hold five stars and a poor letter at once, and where that happens we say so rather than leave you to notice. Because the scale subtracts from a clean sheet, a model year too new to have been recalled, complained about or bulletined scores full marks on an empty record; we label those grades provisional rather than present them as earned.

EPA figures come from fueleconomy.gov vehicle records. Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed nightly.

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