Mazda CX-9 in Netherlands Dec 2011 - Jan 2012
Jan 2012	There was a power leak that caused the battery to run out of power. I had 3 companies check the problem, but non could find the cause. That’s why I sold my CX-9.

Mazda CX-9 in California, United States Jan 2015 - Apr 2017
Apr 2017 130000 mi US $300	Shocks and struts

Mazda CX-9 in New York, United States May 2008 - Mar 2010
Jun 2008	rattling sound when drive over 30 miles/hour. A screw in the driveshaft was misplaced.

Mazda CX-9 in North Carolina, United States Jul 2008 - Jun 2011
Jul 2009 17000 mi	Bluetooth hands-free system did not work. Factory installed incorrect wiring harness for upgraded sound system. Dealership replaced with correct harness and system now works flawlessly.

Mazda CX-9 in Nevada, United States Sep 2011 - Dec 2016
Sep 2012 56000 mi US $30	a/c wouldn't turn off with car. replaced relay.
Jun 2013 65000 mi	Replace passenger wheel bearing under warranty.

Mazda CX-9 in Texas, United States Apr 2011 - Jan 2013
Jul 2011 36200 mi	Back A/C on after engine turned off. A/C relay replacement fixed the problem.
Dec 2011 42000 mi US $200	Leaf and debris blocked evaporator housing outlet. Water is trapped. When turning, water get into interior.

Mazda CX-9 in Puerto Rico Jan 2014 - Jan 2015
Sep 2014 57000 mi US $800	Two ignition coil damage and one fuel injector

Mazda CX-9 in California, United States Aug 2008 - Mar 2010
Sep 2008 350 mi	Rattle coming from driver's side door caused by loose hinge. Loose interior panel on driver's side B pillar
Feb 2009 4000 mi	Faulty clock was losing 30 seconds every week.

Mazda CX-9 in Mississippi, United States Aug 2012 - Jun 2019
Apr 2014 101500 mi US $85	AC drain tube was blocked. Water was dripping down into both front floorboards. Cleared blockage so water would drain correctly.
Aug 2015 125900 mi US $150	Seat switch that controls the tilt of the seat stopped working. Bought switch at recommendation of shop, only to learn that the problem is with the control module, and don't want to spend any more fixing this.
Jun 2018 162000 mi US $50	AC drain tube was blocked. Water was dripping down into both front floorboards. Cleared blockage so water would drain correctly. Second time.
Jun 2019 178372 mi US $680	Replaced master cylinder and brake booster.

Mazda CX-9 in Texas, United States Nov 2011 - May 2013
Jan 2012 US $400	Wheel bearing went out on front driver's side. When ignition is turned off, rear air blower comes on at full blast. This is a known and common issue for the CX-9. Dealer knew exactly how to replace the relay to fix.

Mazda CX-9 in Florida, United States Nov 2007 - Sep 2013
Dec 2009 31000 mi	driver side shoulder harness locked unexpectedly
Mar 2010 33000 mi	drivers seat frame loose, noisy. Replaced drivers seat frame, TSB on noisy leather seats (creeking)
Dec 2012 75000 mi US $500	Drivers electric door actuator failed Replaced with new. Part was 180 rest was labor

Mazda CX-9 in Georgia, United States Aug 2007 - Mar 2010
Oct 2007 1000 mi	Internal transmission failure on day 4 of ownership at 180 miles. Originally diagnosed as software problem but at 5 day in the shop they determined that the transmission was internally defective. A new transmission (not rebuilt) was ordered and installe

Mazda CX-9 in New Jersey, United States May 2008 - Jun 2022
Dec 2010 28000 mi US $20	The small parking yellow bulb blew.
Sep 2011 33000 mi	Two problems. Car running on only 5 cylinders. one cyl not working due to bad Ignition coil. So engine struggles on uphill. Rear blower starts when ignition key is turned off.
Mar 2012 37000 mi US $250	Ignition coil on the 5th cylinder was not working. Got the Ignition coil from a external source($90 vs $140) and paid for the labor and spark plug.
Aug 2017 91500 mi US $600	As my observation goes, my CX9 shows brake wear irregularly around 30,000 miles. It becomes unbearable at 45,000 miles. First time, I got the rotor turned and new brake shoes. this time I got the whole set, and got good discount.

Mazda CX-9 in Florida, United States Jun 2010 - Nov 2010
Jul 2010 34000 mi	Front AC blower remained on after turning engine off. R&R relay under original warranty.

Mazda CX-9 in Kansas, United States Jan 2008 - Jun 2022
Aug 2008 8000 mi	REAR POWER LIFT GATE WOULD NOT CLOSE WHEN POWER BUTTON WAS PRESSED, INTERMITTANT PROBLEM. THE SHOP COULD NOT FIND THE PROBLEM AND IT HAS BEEN WORKING FINE EVERY SINCE.
Dec 2008 14000 mi	Silver paint peeling from armrest garnish.
Feb 2009 16000 mi	Replace silver garnish on two front doors.
Mar 2015 91000 mi US $200	front tire rod replaced

Mazda CX-9 in Virginia, United States Dec 2007 - Nov 2010
Jun 2008 10000 mi	sirius radio not functioning properly
Mar 2009 27000 mi
Jun 2009 33000 mi	Broken tire pressure monitoring sensor, Goodyear repair shop broke it while replacing tires.

Mazda CX-9 in Kentucky, United States Jun 2017 - Jun 2018
Jan 2018 142000 mi US $300	oil change

Mazda CX-9 in Tennessee, United States Jun 2017 - Jun 2018
Dec 2017 1000000000 mi US $600	Fuel injectors were gunked up. 1 cylinder wasn’t firing because the cable running power to the injector was loose at the connection site

Mazda CX-9 in Texas, United States Dec 2015 - Jan 2018
Dec 2015 100000 mi US $600	Replaced rear shocks. Replaced gasket and cover.

Mazda CX-9 in Iowa, United States Apr 2011 - Mar 2018
Sep 2011 43000 mi US $90	HVAC fan relay replaced. Known problem on CX-9.
Nov 2011 46000 mi US $32	HVAC fan relay failed
Dec 2013 63000 mi US $350	Torn CV boot. Needed new CV joint.
Sep 2014 75000 mi US $200	Siezed brake caliper from corrosion. Replaced and system was bled.
Mar 2015 78000 mi US $200	New front caliper and pads. Old caliper had corroded pistons.
Jun 2016 98000 mi US $120	Sway bar link became separated. Need to be reimbursed from Mazda since this part was replaced as part of the recall.

Mazda CX-9 in Tennessee, United States Nov 2011 - May 2015
Apr 2012 30300 mi	Motor mount replaced.
Nov 2012 43900 mi	Rattle caused by loose bracket. Bracket tightened.
Sep 2013 65000 mi	Rear differential leaking oil.
Aug 2014 85000 mi US $150	Driver's seat belt buckle would not latch. Replaced buckle.

Mazda CX-9 in Arizona, United States Jun 2012 - Apr 2018
Jul 2012 34200 mi	Dealer replaced flaking silver trim, common issue for this model
Dec 2015 74000 mi US $50	Replaced front passenger power window regulator.
Jan 2018 94000 mi US $50	Aux port died and needed to be replaced

Mazda CX-9 in Illinois, United States Jul 2012 - Oct 2012
Aug 2012 60800 mi US $890	Air conditioner would not stop after engine shut off. Shocks went bad.
Oct 2012 65000 mi	Shocks went bad again

Mazda CX-9 in Ohio, United States Sep 2011 - Apr 2015
Oct 2013 77000 mi US $85	Faulty TPS sensor.

Mazda CX-9 in Massachusetts, United States Oct 2011 - Sep 2015
Sep 2013 67000 mi US $951	Ball joint and lower control arm were replaced. Window seal on driver's door replaced.
Jun 2014 74000 mi US $834	AC condensate drain plugged. Reservoir filled with water destroying the blower motor
Mar 2015 86000 mi US $750	inner tie rods and sway bar links worn out
Jul 2015 89800 mi US $1500	4 coils needed to be replaced
Sep 2015 94000 mi US $234	outer tie rod ends replaced

Mazda CX-9 in New Jersey, United States Aug 2011 - Sep 2011
Sep 2011 44000 mi	The fuel gauge was not reporting the correct amount of fuel remaining in tank and I ran out of gas. Fuel gauge was faulty. Replaced by dealer no charge.

Mazda CX-9 in Maryland, United States Jan 2011 - Jun 2022
Jul 2012 26500 mi US $250	Window trim was warping. It was not covered under our extended warranty.
Jul 2016 65700 mi US $450	Rear differential gasket leaking.
Feb 2018 85000 mi US $850	Heat shield between drive train and cabin rusted out and had to be replaced.

Mazda CX-9 in Illinois, United States Feb 2011 - Jul 2016
Dec 2012 49000 mi US $850	Blind spot monitoring module on the left side failed and needed to be replaced.
Nov 2015 99000 mi US $400	Uneven tire wear. Recall on lower control arm ball joints which were replaced. As a result of the ball joint problems, outer tie rods also needed to be replaced, but Mazda didn't pay for these. Transfer Case leaking and replaced under warranty

Mazda CX-9 in New York, United States May 2011 - May 2012
May 2012 56000 mi US $130	Slight shuddering while braking. Right Tie rod end was replaced. Loose heat shield, louder than normal engine noise due to rattling.

Mazda CX-9 in Alberta, Canada Jun 2011 - Jun 2016
May 2015 82460 mi C $600	Car had a slight shimmy at speeds between 55-65 kph. Tie rod ends replaced and wheel alignment.
Dec 2015 88040 mi C $5000	Problem was a slight vibration in drivetrain at 50-60 Kph. Diagnosis was torque converter problem caused by poor shifting by transmission. They ended up replacing both as well as the transaxle.

Mazda CX-9 in Colorado, United States Sep 2013 - Jun 2015
Oct 2013 151000 mi US $1300	Replaced rack
Oct 2014 164700 mi US $25	Rear differential drain plug was leaking. Replaced plug. Probably cross-threaded.

Mazda CX-9 in Virginia, United States Jun 2015 - Jun 2016
Jul 2015 78000 mi US $500	Too much play/separation on ball joints. Had to have front lower control arms, swaybar links and swaybar bushings replaced. Also had broken rear differential mount. Had 2 lower differential mounts replaced. Tire sensor broke and right rear tire deflated. Car was also shaking at high speeds when brakes were pressed. Went to dealer. Front rotors were very rusty and warped. Got new rotors and new tire valve.
Jan 2016 US $1000	Both credit card style keys for the car have problems. One is not recognized by the car at all, and will not start the car even with the inserted manual key. The other cannot maintain contact with the battery, so only works part-time. Right front brake caliper was sticking. Noticed sluggishness and felt slight roar at higher speeds. Required new brake pads, new right caliper and rotor (replaced in 2015), and new brake lines/hoses.

Mazda CX-9 in Texas, United States Apr 2015 - Jun 2016
Apr 2015 56000 mi US $60	Air filter and blower clogged with dust causing condensation to pool and overflow into passenger footwell. cleaned out dust. blower shorted, replaced blower

Mazda CX-9 in Nebraska, United States Jun 2014 - Apr 2021
Jun 2015 101000 mi US $1700	replace ball joints and tie rod ends
Oct 2016 132700 mi	front ball joints were replaced again as a warranty item. Am awaiting a reimbursement for previous ball joint repair before recall was issued.
Sep 2020 198000 mi US $6000	New front differential and drive shaft

Mazda CX-9 in Michigan, United States Aug 2015 - May 2017
Feb 2016 56300 mi	Problem with traction control. Tech found grease on wiring around turn signal.

Mazda CX-9 in Utah, United States Feb 2015 - Aug 2017
Feb 2015 75000 mi US $150	transfer case oil, supposed to be life time, but fluid was spent beyond its life, 75w-140 had turned to a greasy paste not oil any more, requiring 4 fill up and drains, no drain plug fluid is supposed to be lifetime, known failure area
Aug 2015 80100 mi	engine computer tripped posting 5 check engine codes
Dec 2015 83000 mi US $900	driveline went bad, u joints failing and carrier bearings failed, not serviceable at all, had to replace entire driveshaft assembly
Jan 2017 91000 mi US $5000	transfercase, a common problem with these, complete failure

Mazda CX-9 in Alabama, United States Nov 2017 - Jun 2018
Dec 2017 136000 mi US $60	BCM replaced due to water damage. Glass company finally determined water leaking from sunroof and repaired. Dealer paid for replacement parts and leak repair.

Mazda CX-9 in California, United States Apr 2015 - Apr 2017
Apr 2017 82000 mi US $950	Spark plug replacement and throttle body cleaning

Mazda CX-9 in California, United States Jun 2015 - Jun 2018
Dec 2016 84000 mi US $300	Recall for bushings. A-arms were rusted badly, needed to be cut out. New a-arms provided by warranty coverage. Torque converter failure imminent. Lock/unlock BADLY during steady-state driving. Can be defeated by selecting "Manual" shift mode on transmission. Tech determined bad TC. Cannot replace; integral to transmission. Not replaced.
May 2018 106000 mi US $1300	Wheel bearing and hub assy replaced.

Mazda CX-9 in Maryland, United States Sep 2014 - Jun 2022
Mar 2015 24000 mi	Right front caliper stuck/frozen "on" ,required new caliper and rotor(heat damage). Voluntarily replaced LF rotor at same time. Pads were almost new-not replaced.

Mazda CX-9 in Ohio, United States Dec 2012 - Jun 2015
Apr 2014 86700 mi US $2000	Power transfer unit was going out. Symptom was leaking thick grease in garage. Tie rods replaced

Mazda CX-9 in Ontario, Canada Nov 2012 - Apr 2017
Jun 2013 66340 mi C $150	During normal maintenance, the left tie-rod was found moving end up and down.
Feb 2014 72540 mi	Front seatbelts not retracting automatically.
Jun 2014 75640 mi C $300	Replaced tie-rod end right
Mar 2016 96720 mi	Replaced front lower control arms.

Mazda CX-9 in Oregon, United States May 2012 - Jun 2016
Jul 2013 41200 mi US $200	Right front axle seal leaking.

Mazda CX-9 in Missouri, United States Apr 2013 - Aug 2016
Jul 2014 77500 mi US $700	could hear the wheel bearings grinding
Dec 2014 88000 mi US $100	door lock failure.
Mar 2016 110000 mi US $300	exterior electric switch for lock in the driver door.
Aug 2016 112000 mi US $300	bearings replaced

Mazda CX-9 in Indiana, United States Feb 2014 - Sep 2015
Aug 2014 92000 mi US $199	Sunroof leaking, replaced seal
May 2015 103000 mi US $2045	Relaxed 3 wheel bearing hubs, one control arm one sensor.
Jun 2015 104000 mi US $215	Door handle broke

Mazda CX-9 in Montana, United States Oct 2010 - Aug 2020
Aug 2012 52800 mi US $50	Replaced front driver-side wheel bearing.
Jun 2016 86000 mi	Leaking windshield - resealed
Sep 2016 88000 mi US $23	Replaced front and rear blower relays
Oct 2017 95000 mi US $865	Replaced rear main seal.
Apr 2018 101000 mi US $370	Replaced serpentine belt and Tensioner

Mazda CX-9 in Colorado, United States Aug 2012 - Oct 2020
Mar 2016 67000 mi US $1405	Transfer case not operating properly. Leaking from the top of the transfer case. Technicians were able to troubleshoot problem to the transfer case and needed to replace.
Dec 2017 78000 mi	Drivers window no longer working. Needed new motor. Working after repair, but auto up or down no longer working. CV boot needed to be replaced on passenger front wheel. Front struts both needed to be replaced.

Mazda CX-9 in Ohio, United States Feb 2010 - Sep 2011
Sep 2011 59000 mi US $40	Front left wheel bearing replaced under warranty

Mazda CX-9 in North Dakota, United States Jul 2008 - Jul 2022
May 2014 30000 mi US $150	Transfer case seeping around output seals, known issue with pressure release valve that was replaced to prevent more seepage Bad rack and pinion system, one arm is loose but still operates. Bad bushings on rear stablalizer bar
Sep 2015 38000 mi	Ball ends replaced for recall

Mazda CX-9 in California, United States Apr 2008 - Jun 2011
Mar 2009 17000 mi	The sunglass holder broke.

Mazda CX-9 in New York, United States Apr 2008 - Mar 2014
Jan 2012 66300 mi US $220	Air Bag Connector

Mazda CX-9 in Illinois, United States Jul 2008 - Mar 2010
Dec 2008 7000 mi US $54	Paint peeling on the silver trim on the front doors Sunroof cover rattles when car is warm. Since the weather was very cold, dealer could not replicate the problem. They made some adjustments and agreed to look at it again when the weather is warmer and the problem is more apparent.
Jul 2009 14000 mi US $46	Rough Idle, died sometimes when idling. Dealer replaced throttle body, problem solved.

Mazda CX-9 in Ontario, Canada Feb 2011 - Dec 2016
Feb 2016 111420 mi C $300	Rear wheel bearing was about to fail
Jul 2016 117780 mi C $1300	Replaced ball tie rod ends as well as all four struts
Oct 2016 121500 mi C $200	Drive belt and alternator belt replaced
Dec 2016 124620 mi	Drive belt was about to fail due to improper installation by dealer.

Mazda CX-9 in Illinois, United States Aug 2008 - May 2011
Dec 2008 15000 mi US $64	Defrost did not work on remote start.

Mazda CX-9 in Idaho, United States Aug 2008 - Apr 2011
Sep 2008	I went in for my scheduled 2 week checkup and reported an exterior trim problem. Two parts were ordered.
Oct 2008 1000 mi	Exterior trim on rt. side mirror was loose. part ordered and installed
Feb 2009 5000 mi	Sunroof was leaking when large amounts of water hit the roof, such as automatic car wash or heavy rain. Leakage was far in excess of acceptable level. Dealer replaced sunroof window glass and seal kit. Problem resolved.

Mazda CX-9 in Alaska, United States Mar 2008 - Jun 2014
Oct 2008 5000 mi	Parking lights did not illuminate when vehicle was remotely started. Dealer repaired broken wire.
Mar 2009 8000 mi US $68	Climate controls were inactive when vehicle was remote-started. Replaced wiring harness.
May 2009 10000 mi	Scratches on driver and passenger door trim. TSB indicates bad paint used on the original batch of these parts. Dealer ordered new door trim.
Jun 2009 10000 mi	Replaced scratched door trim on both front doors.
Feb 2010 17000 mi	Replace leaking differential side seal. Repaired loose wire in Mazda remote start wiring harness.
Mar 2010 17000 mi	Dealer forgot to initialize remote start remotes at last visit.
May 2010 19000 mi US $1	Replaced leaking left rear axle seal
Jun 2010 20000 mi	Remote start not working. Dealer unable to duplicate, started working without any repairs.
Jul 2010 21000 mi	Replace rear right shock
May 2011 27000 mi US $93	Leaking sunroof. Dealer ordered new seal. New sunroof seal installed.
Jul 2011 29000 mi US $393	Flaking paint on hatch trim piece. Ordered new trim piece. Replaced the hatch trim piece due to flaking paint.
Dec 2011 33000 mi US $26	Rubber trim piece at bottom of driver's side of car was coming loose. Dealer replaced part, did not charge labor.
Jan 2013 12000 mi US $250	Heater fan making a ticking sound. Fan replaced.

Mazda CX-9 in Alberta, Canada Mar 2008 - Jul 2018
Jun 2009 19840 mi	Engine speed surging at hot idle TSB 09-033/08 Paint peeling from interior armrest garnish
Jul 2009 20460 mi	TSB 09-033/08 Paint peeling from interior armrest garnish
Sep 2010 38440 mi	Small rust spot through paint right beside Mazda badge on rear lift gate. Re-painted under warranty.
Aug 2013 75820 mi C $500	Replaced serpentine belt Replaced outer tie rod ends
Jun 2016 110360 mi C $950	Left front wheel came off the vehicle during driving. Wheel lug nuts came loose. Replaced brake rotor, wheel rim, wheel alignment, complete suspension inspection

Mazda CX-9 in Massachusetts, United States Oct 2007 - Nov 2019
Jul 2010 68050 mi US $50	Replaced all 6 spark plugs to address a hesitation issue during acceleration or maintaining speed up inclines. New plugs resolved issue.
Oct 2014 129200 mi US $221	Very slight leak at oil pan gasket. This should have been identified and repaired under Warranty a long time ago, but the dealership said nothing was wrong. Independent shop replaced RTV seal - no more leaks.
Dec 2015 134000 mi US $1046	"White Powder" being released into the ventilation system from a deteriorating evaporator core, and blowing out of the vents into the vehicle. This was possibly the result of an earlier clog in the evaporator drain line.
Mar 2018 142000 mi US $15	Replaced blower fan relays (front and rear) due to ventilation fan staying on for up to a minute after vehicle was turned off. Known issue for this model.

Mazda CX-9 in Michigan, United States Sep 2007 - Feb 2018
Mar 2008 6000 mi	I discovered rust on my CX9 a couple of weeks ago, just above the license plate, the color matched/chrome insert that fits into the tailgate. Rust is starting in the joint area between the insert and the tailgate at several locations. I took it to the ...
Mar 2009 16000 mi	Paint repair for rust around trim piece above license plate, similar to repair last year. Dealer stated he received recent service bulletin to isolate trim piece from body to prevent vibration causing rubbing of paint and rust development.
Apr 2012 50000 mi	Right rear wheel bearing
Sep 2015 82000 mi US $500	Both outer tie rods needed replacement.
Feb 2016 87000 mi	Lower control arms were replaced, due to wear and recall notice.
May 2016 89000 mi US $1600	Drivers front and rear wheel bearings,  Passenger front mid-shaft bearing. The associated hub and shaft were replaced. AC blowing warm on drivers side, colder on passengers side. Diagnosis, low on freon, leak check did not identify leak. Added freon now working correctly.
Feb 2017 98000 mi US $125	Diagnosis- Passenger side HID headlight stopped working. Control module failure. Dealer quoted an additional $800 to repair but did not have part in stock. Owner purchased part on line and made repairs
Jul 2017 102000 mi US $150	Front Muffler rusted, repair shop did not have part, inserted straight pipe. Still has both rear mufflers. Little louder than stock.
Nov 2017 110000 mi US $725	Replaced front muffler assembly
Dec 2017 110000 mi	Recall air bag inflator - no charge

Mazda CX-9 in California, United States Oct 2007 - Nov 2015
Dec 2010 32000 mi	bushings replaced
Sep 2011 38000 mi	wheel bearings on front L wheel were worn and scraping
Jul 2012 46300 mi	Grinding bearings
Aug 2013 60400 mi US $200	oil leak. Dealer found aftermarket drain plug was ill fitting. Replaced it and leak stopped
Dec 2014 72000 mi US $400	worn wheel bearing

Mazda CX-9 in New Mexico, United States Nov 2007 - Nov 2010
Dec 2007 1000 mi	Paint missing from passenger side rear door edge.
Mar 2009 13000 mi	TSB - repaired power driver seat wiring harness. TSB - faulty ABS warning light Broken gas cap tether.
Apr 2009 15000 mi	TSB - faulty ABS warning light Broken gas cap tether.
Oct 2009 19000 mi	Chrome trim piece fell off. Dealer ordered and installed new piece.

Mazda CX-9 in Ontario, Canada Feb 2008 - Mar 2015
Mar 2008 620 mi	Rattle in centre console.
Aug 2009 22320 mi	surface rust on tailgate and roof
Nov 2010 42340 mi C $500	Check door straps ordered. Noisy. TSB. Key fobs ordered.
Mar 2011 46500 mi	Navigation/Rear View camera screen resolution completely washes out during daylight. Dealer admitted that it appears to be a problem and promised to look into a warranty replacement.
Jul 2011 52080 mi	New navigation unit ordered by dealer. Seems to be difficult to obtain. Rust on tailgate has returned, coming from under paint due to a plastic insert in the tailgate rubbing against the metal. Previously repaired under warranty.
Dec 2011 58280 mi C $700	Dealer advised tie rod had excessive play and recommended replacement. Agreed and repair completed while in for 96,000km service.
Aug 2012 65960 mi C $1000	Replaced worn tie rod
Sep 2013 81220 mi	Rust bubbles re-appeared on tailgate. Previously repaired under warranty in 2010. Mazda agreed to pay for the repair as it was originally reported while under warranty.
Mar 2014 89280 mi C $50	Heat shield loose. Replaced bolts and reattached

Mazda CX-9 in California, United States Feb 2008 - Dec 2020
Jan 2009 9000 mi	The chrome trim pieces on all four doors and the center console were easily scratched. Mazda released some newer parts that have more protection against minor scatches. Dealer replaced all pieces under warranty.
Jul 2009 12000 mi	One of the smart keys would lock/unlock the car but would not start the car. Replaced the battery and the problem persisted. Dealer replaced the defective smart key.
Dec 2015 68000 mi US $180	Replacing the AC belt, which started to crack as previously inspected.
Sep 2017 78000 mi US $1650	AWD Transfer Case was leaking and the entire unit has to be replaced
Mar 2018 82675 mi US $1277	Replace four shocks and perform wheel alignments. Shocks showed some wear and tear as the car leaned during cornering

Mazda CX-9 in Pennsylvania, United States Aug 2010 - May 2012
Feb 2012 37300 mi US $300	Driver side strut replaced

Mazda CX-9 in Minnesota, United States Nov 2008 - Oct 2011
Apr 2010 18000 mi	Driver side painted plastic arm rest was peeling. Found in TSB. Repaired by dealer.
Oct 2010 24000 mi	Ticking sound from engine at 1500rpm under acceleration/load. Dealer found TSB related to problem. Dealer re-flashed computer and issue was gone.

Mazda CX-9 in New York, United States Aug 2009 - Apr 2015
Oct 2009 12000 mi	paint failure on door trim panels. lower door gaskets had to be replaced both drivers and passenger side.
Jul 2011 23000 mi	Replaced blower motor Replaced blower motor
Jan 2013 34000 mi US $350	Drivers door electric lock did not work required new actuators.
Jul 2013 46300 mi US $300	A/C motor burned out due to condensate drain being blocked and overflowed into motor. dealer wanted 910.00 to repair. Got recycled assembly on line for 200.00. took longer to clear drain than to replace motor. also changed 2 fan relays.
Apr 2015 64000 mi US $1100	passenger side calipers. front rotors again , pads

Mazda CX-9 in Pennsylvania, United States Nov 2009 - Apr 2012
Jan 2011 39900 mi	Knocking sound when cold. Unsuccessful, suspected in intake. Goes away when warm and is not heard unless below 40 degrees.

Mazda CX-9 in Utah, United States Aug 2009 - Mar 2010
Sep 2009 10000 mi	I have had a rattle in the area of the cd in the dash for sometime. It only occurs on uneven roads. I think I will insist that the remove the console and replace it, hopefully they can alleviate the problem.

Mazda CX-9 in Pennsylvania, United States Dec 2009 - Nov 2019
Apr 2011 24500 mi	Frt left window motor was loose in door causing rattle and periodic closing problem. Replaced relays that caused AC to run when ignition was turned off.

Mazda CX-9 in New South Wales, Australia Feb 2010 - Jun 2011
Mar 2010 17360 mi A $360	ABS inadvertently activating for no reason, rare occurrence only happening at less than 20kph, usually on an angle and making right hand turn.

Mazda CX-9 in Ohio, United States Jul 2010 - Aug 2011
Mar 2011 20000 mi	Auto climate controls going crazy in cold weather. Rust on rear hatch Paint flaking off all 4 wheels.
Apr 2011 20800 mi	A/C fan coming on when car parked (bad relay)

Mazda CX-9 in Michigan, United States Apr 2010 - Sep 2010
May 2010 36000 mi	Rusting tailgate 2nd repair.

Mazda CX-9 in Washington, United States Nov 2008 - Jun 2018
Nov 2009 14900 mi	TSB 03-006/08 Excessive Vibration From Propeller Shaft. Propeller shaft was replaced.
Mar 2010 17000 mi	Remote start control unit needed replacement. Emergency brake pedal rubber pad broke apart and needed replacement.
Apr 2012 39000 mi US $169	TCS light came on. Repairs showed that it was the way the dealer installed a remote start system and did not replace a wiring bundle into the correct position.
Jan 2016 46300 mi US $577	Right rear axle seal and axle replaced. Battery was dead and replaced. Spark plugs replaced.
Jul 2016 89500 mi	Needed another new battery.
Jun 2018 100000 mi US $93	Worn drive belts. Replaced 2 belts and belt tensioner.

Mazda CX-9 in Illinois, United States Feb 2011 - Apr 2011
Apr 2011 36000 mi	Rear AC unit not responding to rear inputs, could only be controled thru the front panel. rear sending board was replaced

Mazda CX-9 in Maryland, United States Mar 2009 - Aug 2017
Jan 2009 13000 mi	Rear window would not do down the entire way. A piece of stryofoam had come loose inside the door and prevented the window from descending completely. Repaired under warranty.
Dec 2009 27500 mi	Rear tailgate interior light switch was repaired (connections tightened), as this only worked occasionally when the tailgate was opened. Rear hatch light (when tailgate opened) only worked occasionally. Dealer tightened the connections for the bulb. Working fine now.
Apr 2012 49000 mi US $125	Interior ventilation fan would turn on, even if the system was off, when you shut off the engine. Apparently a well known problem at Mazda as the dealer knew right away that an electrical part needed to be replaced. Ventilation fan would not turn off, even when the engine was off. Electronic control was replaced. Dealer knew right away of this problem, so must be common.
Aug 2014 75000 mi	Serpentine belt replaced as it showed signs of aging (cracking)
Sep 2016 96000 mi US $250	Condensation drain was plugged, resulting in water on the passenger floor foot-well. Cleaned the drain and the fan motor replaced, as it sat in a pool of water (due to poor draining of condensate) and would only work sporadically.

Mazda CX-9 in North Carolina, United States Jan 2009 - Oct 2021
Mar 2010 29000 mi US $1100	Replaced tires and did 30000 mile services. Also replaced interior trim.
Jun 2010 35000 mi US $60	rear passenger door lock does not work. motor needed replacement
Apr 2012 75000 mi US $140	AC line froze, needed to be cleaned out due to the cabin air filter needing to be replaced
May 2014 118300 mi US $1700	front diff had to be replaced, made a terrible grinding noise
Jun 2015 143000 mi US $1200	air intake clogged water built up in engine wall,shorted out AC compressor,solenoid and other electrical functions of AC.
Sep 2015 145000 mi US $1700	coil leaking along with gaskets and others
Apr 2016 162200 mi US $1700	condenser and several other parts need to be replaced. coil replaced last year
Dec 2016 182000 mi US $1250	Driver side headlight replacement
Sep 2017 198000 mi US $400	oil pressure regulator.
Jun 2018 215000 mi US $2700	Alternator failed due to power steering pump dripping fluid on top of it. Power steering pump failed and leaked fluid
May 2019 232000 mi US $3000	entire AC system replacement.

Mazda CX-9 in Minnesota, United States Nov 2008 - Apr 2017
Oct 2013 73300 mi US $60	Replaced worn drivers outer tie rod end.
Jun 2015 102000 mi US $112	One of the two front rotor pistons seized on drivers side causing brake to stick.
Oct 2015 108300 mi US $800	Replaced left rear wheel bearing due to loud roaring noise over 30 mph.
Nov 2015 109000 mi US $478	Lower Control Arm recall, had to replace both lower control arms but parts were not available. Polar Chev and Mazda said car was too dangerous to drive and gave us a loaner car until ours could be repaired. Right front wheel bearing was worn out and making noise.

Mazda CX-9 in Illinois, United States Aug 2009 - Mar 2010
Sep 2009 8000 mi	bad connection between remote starter and ignition switch

Mazda CX-9 in Connecticut, United States Jun 2009 - Jun 2013
Jul 2010 33000 mi	A rubber strip around the passenger door was loose. The dealer replaced the strip on the passenger door and the driver door. He said Mazda was aware of "some" problem with them allowing too much noise in.

Mazda CX-9 in New York, United States Oct 2010 - Mar 2012
Dec 2011 36000 mi US $400	worn tie-rod

Mazda CX-9 in Minnesota, United States Nov 2008 - Aug 2013
Jan 2009 10000 mi	Intermittant coolant odor present at 40 degrees+ in traffic/ in garage. Unable to find leak or repeatedly find issue, it happens in slow traffic and when fresh air is coming in (not on recirculate) Same issue since new, annoying for such a great car.

Mazda CX-9 in Maryland, United States Jan 2008 - Mar 2010
Feb 2008 1000 mi	Computer chip "brain" not working; drain battery continously; unable to start/need to jump CX9 in the morning; been in shop for 20 days; still waiting for part on back order;"it's a new car.....we don't have the part ....." Never buy a Mazda.  auto climate control not working properly, vehicle would not heat up; need to manual override to heat the car. "we don't see any problem" ...... wish they drive the car when it's cold with kids... then again....we have not.....since the dealer..
Mar 2008 1000 mi	Smart key does not work again; cannot start nor open/close door with remote. Mazda refused to toll vehicle to dealer near my home.... DON'T GET A MAZDA

Mazda CX-9 in Illinois, United States May 2008 - May 2011
Dec 2010 32000 mi	Rear passenger window sticking due to loose internal foam part. Door disassembled and part reattached.