Is power brake booster and master cylinder failure a known issue with the 2014 Mazda Cx 9?

9 NHTSA complaints have been filed about power brake booster and master cylinder failure on the 2014 Mazda Cx 9 (2016-01 → 2023-08). Reported component: SERVICE BRAKES. From an owner report (NHTSA ODI #11531431): "When I press on my brakes, I hear air. I am fortunate that, as of this reporting, I have not had an accident. My brakes do not fully stop my car, so I have to judge when to brake in order to slow down and not hit the car ahead of me" Source: NHTSA.

Is internal water pump failure causing engine damage a known issue with the 2014 Mazda Cx 9?

16 NHTSA complaints have been filed about internal water pump failure causing engine damage on the 2014 Mazda Cx 9 (2019-03 → 2024-06). Reported component: ENGINE. From an owner report (NHTSA ODI #11597219): "I purchased a 2014 Mazda CX-9 back in May of 2020 w/ roughly 60k on the dash. Literally 7 months later w/ about 72k on the dash, the day after Christmas I was driving to work (I worked in the next state over) on the highway my car just shut down" Source: NHTSA.

Is sunroof and rear window spontaneous shattering a known issue with the 2014 Mazda Cx 9?

4 NHTSA complaints have been filed about sunroof and rear window spontaneous shattering on the 2014 Mazda Cx 9 (2015-02 → 2023-06). Reported component: VISIBILITY. From an owner report (NHTSA ODI #11527008): "I was driving on interstate and there were not any other vehicles that were all that close to me. All of a sudden there was this huge extremely loud bang and glass shattering sound. Scared me to death" Source: NHTSA.

Is transfer case fluid leak onto exhaust a known issue with the 2014 Mazda Cx 9?

2 NHTSA complaints have been filed about transfer case fluid leak onto exhaust on the 2014 Mazda Cx 9 (2018-07 → 2018-11). Reported component: POWER TRAIN. From an owner report (NHTSA ODI #11113446): "WE WERE ON A CITY ROAD UPHILL AND DRIVING TO A FRIENDS HOME. OUR MAZDA CX-9 GRAND TOURING MADE A RATTLING NOISE, RELEASED A LOT OF WHITE SMOKE, AND LOST ACCELERATION" Source: NHTSA.

2014 Mazda Cx 9 Recalls, Issues & Maintenance

Q: Is front suspension ball joint and wheel bearing corrosion a known issue with the 2014 Mazda Cx 9?

5 NHTSA complaints have been filed about front suspension ball joint and wheel bearing corrosion on the 2014 Mazda Cx 9 (2016-09 → 2024-11). Reported component: SUSPENSION. From an owner report (NHTSA ODI #11626356): "The contact owns a 2014 Mazda CX-9. The contact stated while driving at various speeds, the vehicle was drifting to either side. There was no warning light illuminated. The contact had to forcefully grip the steering wheel to avoid losing control of vehicle" Source: NHTSA.

Q: Is takata airbag recall repair delay a known issue with the 2014 Mazda Cx 9?

3 NHTSA complaints have been filed about takata airbag recall repair delay on the 2014 Mazda Cx 9 (2016-12 → 2018-12). Reported component: AIR BAGS. From an owner report (NHTSA ODI #11156638): "TL* TAKATA RECALL. THE CONTACT OWNS A 2014 MAZDA CX-9. THE CONTACT STATED THAT NHTSA CAMPAIGN NUMBER: 18V717000 (AIR BAGS) EXCEEDED A REASONABLE AMOUNT OF TIME FOR REPAIR. THE CONTACT RECEIVED THE RECALL LETTER IN OCTOBER OF 2018" Source: NHTSA.

The 2014 Mazda Cx 9 carries 3 open NHTSA recalls — most recently covering inflator module and lower ball joint. Owners report 6 recurring issue clusters, led by “Power brake booster and master cylinder failure.” Mazda's Skyactiv engines use unusually high compression ratios (13:1 to 16:1) and require strict adherence to oil intervals — extending oil life on a Skyactiv engine accelerates carbon buildup on intake valves. Mazda's published Schedule 1 (severe) covers most US driving conditions. Mazda3, CX-5, CX-30, and CX-50 share the Skyactiv-G platform.

3 Open Recalls

Source: NHTSA

AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

Campaign #18V717000 · Dec 10, 2018

Issue: Mazda North American Operations (Mazda) is recalling certain 2014-2015 Mazda CX-9 vehicles sold, or ever registered in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." Additionally, unless covered in "Zone A," Mazda is recalling certain 2011-2013 Mazda6, 2011-2012 CX-7, and 2011-2015 CX-9 sold, or ever registered in the states of Arizona, Arkansas, Delaware, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia, or "Zone B." Additionally, unless covered in Zone A or Zone B, Mazda is recalling certain 2010-2013 Mazda6, 2010-2012 CX-7, and 2010-2015 CX-9 vehicles ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C." These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

Risk: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.

Fix: Mazda will notify owners, and dealers will replace the front passenger air bag inflator with an alternate inflator, free of charge. The recall began November 9, 2018. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 1317F.

SUSPENSION:FRONT:CONTROL ARM:LOWER BALL JOINT

Campaign #15V451000 · Jul 20, 2015

Issue: Mazda North American Operations (Mazda) is recalling certain model year 2007-2014 CX-9 vehicles manufactured October 24, 2006, to December 28, 2013. The affected vehicles have front suspension ball joints that may corrode from water leaking into the fitting.

Risk: Over time, the ball joint corrosion may result in the front lower control arm separating from the ball joint, causing a loss of steering control and increasing the risk of a crash.

Fix: Mazda will notify owners, and dealers will replace both the left and right lower control arms, free of charge. The recall began on September 14, 2015. The recall will begin with model year 2007-2009 vehicles registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, Washington D.C., West Virginia, and Wisconsin. The second phase will be for model year 2010-2014 vehicles in the same states. Finally, all remaining vehicles will be remedied. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 8515G.

STEERING

Campaign #16V203000 · Nov 4, 2016

Issue: Mazda North American Operations (Mazda) is recalling certain model year 2016 CX-3 vehicles manufactured June 1, 2015, to December 2, 2015, 2013-2014 Mazda2 vehicles manufactured July 3, 2013, to August 8, 2014, 2014-2016 CX-5 vehicles manufactured January 19, 2013, to December 2, 2015, and 2013-2015 CX-9 vehicles manufactured December 6, 2012, to July 31, 2015. The lower mounting nuts and bolts that attach the front strut assembly to the steering knuckle may loosen, allowing the steering knuckle to separate.

Risk: If the steering knuckle separates from the strut assembly, it can cause a loss of steering control, increasing the risk of a crash.

Fix: Mazda will notify owners, and dealers will inspect the lower mounting nuts and bolts that secure the front strut assembly to the steering knuckle. If the bolts are loose, they will be replaced and then correctly tightened, free of charge. The recall is expected to begin May 20, 2016. Owners may contact Mazda customer service at 1-800-222-5500. Mazda's number for this recall is 9316D.

Recall data refreshed Sep 6, 2026.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2014 Mazda Cx 9.

Reported to NHTSA

Power brake booster and master cylinder failure

SERVICE BRAKES

9 NHTSA complaints · 2016-01 → 2023-08

“When I press on my brakes, I hear air. I am fortunate that, as of this reporting, I have not had an accident. My brakes do not fully stop my car, so I have to judge when to brake in order to slow down and not hit the car ahead of me”
— Owner report, NHTSA ODI #11531431

“THIS IS A MAZDA CX9 2014 AWD. I NEEDED TO STOP QUICKLY ON A CITY STREET IN MODERATE TRAFFIC AT 3:00PM. I WAS TRAVELING ABOUT 25 MPR NORTH IN THE INSIDE LANE ON A DRY ROAD”
— Owner report, NHTSA ODI #10822425

“FIRST BRAKES STARTED FAILING WERE SOFT HAD TO PUMP THEM TO STOP IN TIME AS TO NOT HIT ANOTHER VEHICLE. I TOOK MY CAR TO MY MECHANIC. HE SAID WE NEEDED TO REPLACE THE MASTER CYLINDER. DID THIS NOW BRAKES MAKE A WHOMP WHOMP SOUND AND PUSH BACK SOME”
— Owner report, NHTSA ODI #11309735

Read all complaints on NHTSA →

Front suspension ball joint and wheel bearing corrosion

SUSPENSION

5 NHTSA complaints · 2016-09 → 2024-11

“The contact owns a 2014 Mazda CX-9. The contact stated while driving at various speeds, the vehicle was drifting to either side. There was no warning light illuminated. The contact had to forcefully grip the steering wheel to avoid losing control of vehicle”
— Owner report, NHTSA ODI #11626356

“HEARD LOUD GRINDING SOUND FROM RIGHT REAR SIDE OF VEHICLE WHEN TURNING WHEEL TO THE RIGHT. BROUGHT TO MECHANIC AND NEEDED R REAR WHEEL BEARING AND HUB ASSEMBLY COSTING $1000.00. NOTICED THERE HAVE BEEN OTHER COMPLAINTS ABOUT THIS ISSUE”
— Owner report, NHTSA ODI #11343006

“TL* THE CONTACT OWNS A 2014 MAZDA CX-9. WHILE DRIVING VARIOUS SPEEDS, THE BRAKE PEDAL WAS DEPRESSED AND A BUMPING NOISE WAS HEARD FROM THE FRONT SUSPENSION”
— Owner report, NHTSA ODI #11054878

Read all complaints on NHTSA →

Internal water pump failure causing engine damage

ENGINE

16 NHTSA complaints · 2019-03 → 2024-06

“I purchased a 2014 Mazda CX-9 back in May of 2020 w/ roughly 60k on the dash. Literally 7 months later w/ about 72k on the dash, the day after Christmas I was driving to work (I worked in the next state over) on the highway my car just shut down”
— Owner report, NHTSA ODI #11597219

“Water pump defect that led to pump failure, which led to catastrophic engine failure without any prior warning. The defect is in the internal chain-driven water pump. The pump is meant to circulate coolant through the engine while the engine is running”
— Owner report, NHTSA ODI #11494654

“TL* THE CONTACT OWNS A 2014 MAZDA CX-9. WHILE DRIVING APPROXIMATELY 40 MPH, THE VEHICLE LOST POWER AND STALLED WITHOUT WARNING. THE CONTACT WAS ABLE TO RESTART THE VEHICLE AFTER SEVERAL ATTEMPTS; HOWEVER, THE FAILURE RECURRED”
— Owner report, NHTSA ODI #11270700

Read all complaints on NHTSA →

Sunroof and rear window spontaneous shattering

VISIBILITY

4 NHTSA complaints · 2015-02 → 2023-06

“I was driving on interstate and there were not any other vehicles that were all that close to me. All of a sudden there was this huge extremely loud bang and glass shattering sound. Scared me to death”
— Owner report, NHTSA ODI #11527008

“WHILE DRIVING ON THE ROAD MY SUNROOF EXPLODED. I THOUGHT AT FIRST A ROCK HIT, BUT AFTER INSPECTING IT THE GLASS BLEW OUTWARD. SHARDS OF GLASS ARE ALL OVER MY WIFE , CHILDSEATS, INTERIOR, AND MYSELF. *TR”
— Owner report, NHTSA ODI #10683499

“REAR WINDOW EXPLODED WHEN I TOOK MY FOOT OFF THE BRAKE? NEVER EVEN TOUCHED THE ACCELERATOR. *TR”
— Owner report, NHTSA ODI #10680724

Read all complaints on NHTSA →

Takata airbag recall repair delay

AIR BAGS

3 NHTSA complaints · 2016-12 → 2018-12

“TL* TAKATA RECALL. THE CONTACT OWNS A 2014 MAZDA CX-9. THE CONTACT STATED THAT NHTSA CAMPAIGN NUMBER: 18V717000 (AIR BAGS) EXCEEDED A REASONABLE AMOUNT OF TIME FOR REPAIR. THE CONTACT RECEIVED THE RECALL LETTER IN OCTOBER OF 2018”
— Owner report, NHTSA ODI #11156638

“TAKATA RECALL MY COMPLAINT IS THAT I HAVE RECEIVED SEVERAL NOTICES REFERENCING THE TAKATA AIRBAG PROBLEM. MAZDA HAS STILL NOT INITIATED A RECALL. I HAVE SUPPLIED MY EMAIL ADDRESS TO THE TKRESTUCTURING.COM/PPIC IN REFERENCE TO THE CHAPTER 11 CASE NO. 17-11375 (BLS)”
— Owner report, NHTSA ODI #11043404

“TAKATA RECALL ACCORDING TO YOUR AIRBAG RECALL LIST WEBSITE (HTTP://WWW.SAFERCAR.GOV/RS/TAKATA/TAKATALIST.HTML), THE 2014 MAZDA CX-9 IS PART OF THE TAKATA RECALL, HOWEVER WHEN YOU USE THE LOOK-UP TOOL, IT IS NOT LISTED AS UNDER RECALL (HTTPS://WWW.NHTSA.GOV/RECALLS)”
— Owner report, NHTSA ODI #10937908

Read all complaints on NHTSA →

Transfer case fluid leak onto exhaust

POWER TRAIN

2 NHTSA complaints · 2018-07 → 2018-11

“WE WERE ON A CITY ROAD UPHILL AND DRIVING TO A FRIENDS HOME. OUR MAZDA CX-9 GRAND TOURING MADE A RATTLING NOISE, RELEASED A LOT OF WHITE SMOKE, AND LOST ACCELERATION”
— Owner report, NHTSA ODI #11113446

“NOTICED BURNING SMELL COMING FROM UNDERSIDE OF VEHICLE AND OIL-LIKE SUBSTANCE ON FLOOR OF GARAGE AFTER DRIVING. TOOK TO THE DEALER AND WAS INFORMED THAT THE TRANSFER CASE FAILED AND WAS LEAKING FLUID ON EXHAUST SYSTEM”
— Owner report, NHTSA ODI #11153485

Read all complaints on NHTSA →

Note: NHTSA also opened 1 defect investigation(s) on this vehicle that closed without action.

Issues on other model years

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 11, 2026. Investigation data refreshed Sep 11, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Essential maintenance

Critical for safety and preventing major damage

Engine Oil & Filter

Every 5,000 mi

Replace 0W-20 full-synthetic oil every 5,000 miles under Schedule 1. Schedule 2 (highway-only): 7,500 miles. Mazda CX-50 Turbo and CX-9: 5,000 miles regardless of schedule.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

Tire Rotation

Every 7,500 mi

Rotate tires every 7,500 miles. AWD CX-5, CX-50, and CX-9: 5,000 miles to prevent uneven wear from front-biased AWD coupling.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

Brake Inspection

Every 7,500 mi

Inspect brake pads, rotors, and parking brake at every oil change. Mazda3 and CX-5 front pads typically last 35,000-50,000 miles.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

Brake Fluid

Every 30,000 mi

Replace DOT 3 brake fluid every 30,000 miles or 36 months.

Extends the life of your vehicle and improves comfort

Cabin Air Filter

Every 15,000 mi

Replace cabin air filter every 15,000 miles. Behind the glove box on Mazda3, CX-5, CX-30, and CX-50.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

Fatal crash history & reported problems

Occupant deaths in fatal crashes (FARS)

5 crashes 2010–2024

FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number

Owner-reported problem signals

Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.

complaints mentioning a crash

complaints mentioning a fire

Reviewed known issues for this vehicle·Open recalls for this vehicle

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2014 Mazda Cx 9 reflects Mazda's published service intervals. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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