2012 Mazda CX-9 Mazda CX-9 2012

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2012 Mazda CX-9 repairs by problem area

Engine (15%)

Transmission and Drivetrain (33%)

Brakes and Traction Control (21%)

Suspension and Steering (6%)

Electrical and Air Conditioning (13%)

Paint, Rust, Leaks, Rattles, and Trim (8%)

Other (4%)

Chart based on 48 repairs.
See TSBs and recalls for the 2012 Mazda CX-9.

2012 Mazda CX-9 repair cost distribution

$2500+ (0%)

$1000 - $2499 (0%)

$500 - $999 (15%)

$100 - $499 (15%)

< $100 (70%)

Worried about potential repair costs? An extended warranty can provide peace of mind.

Chart based on 40 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2012 Mazda CX-9

Engine not specified

Mazda CX-9 in Oregon, United States
Sep 2013 - Jun 2016
Apr 2014

20700 mi
Car to dealer 6 times (start 6/2013) for toxic smell from engine entering cabin. Nothing found and disregard of Mazda. Car FAILS in 03/2014. Took to shop. Transfer case failure and smell was caused by it. Transfer case changed. 9 months lost 

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2012 Mazda CX-9 4dr SUV

273-horsepower 3.7L V6 6-speed shiftable automatic FWD

Mazda CX-9 in Georgia, United States
Oct 2012 - Dec 2020
Dec 2012

2000 mi
Rubber seal surrounding headlight on driver's side was improperly installed; replacement required removal of bumper, grille and headlight assembly (4 hours to complete), loaner car provided 
Aug 2013

13000 mi
Windshield wipers got out of sync and crashed into each other. Driver side wiper arm bent and passenger side wiper arm stripped at base (where it attaches to motor). All parts of both wipers replaced, but one had to ordered. 
Oct 2014

31700 mi

US $80
High beams range and quality had significantly degraded since new. Replaced with Sylvania Ultra bulbs. Tried to replace bulbs myself but could not fit my hand in the tight space to insert and secure bulbs. 
May 2015

42000 mi
Brake booster vacuum leak, brake booster replaced under warranty extension for that part. Had to order part but provided loaner. 
Jul 2015

45000 mi
Started hearing a loud, intermittent metallic rattling sound after last repair trip. Heat shield on exhaust was loose and the entire exhaust system is being replaced per an extended warranty on the parts. Six days and parts not here yet. 
Aug 2015

46200 mi
Repair of exhaust system noted in 7/15 were completed after waiting 22 days for parts. Noticed heat shield rattling when A/C kicked on a few days later and had to return to dealer for repair. 
Feb 2019

95000 mi

US $725
Transmission began shifting into D (from P, R or N) very harshly a few months ago. I located a TSB that identified this issue as "shift shock" and indicated that a TCM re-flash would correct the issue, if TCM could be reflashed. Based on production date/VIN, the TCM itself could require replacement. A new TCM lists for just over $1k! Luckily, my TCM was one that could be re-flashed. The intial charge for this was $159, but I negotiated it down to $75. I have also noticed some odd behavior in the transmission's downshift behavior. It has always been aggressive about downshifting for engine braking, but it had become overly-agressive on an intermittent basis. The dealer traced this to a faulty Throttle Pedal Position Sensor. The price for this repair was around $375. Finally, they were very insistent that new Synthetic ATF was essential to ensure everything worked well. I was fine with the change, but the $349 price tag was a different story. I did some research, we went back and forth a few times and finally I got them to agree to do it for $210. It's still steep, IMO, but it's worth it for the peace of mind. 
Mazda CX-9 in Virginia, United States
Nov 2016 - Jul 2018
Jun 2017

60000 mi
Drain plug clogged. Water accumulated in vent and sloshing through fan. Easily cleared with shop vac. 
Mazda CX-9 in Texas, United States
Jun 2015 - Jun 2018
Dec 2017

55000 mi

US $50
Window Regulators on both front sides stopped working due to worn out gears 

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2012 Mazda CX-9 4dr SUV

273-horsepower 3.7L V6 6-speed shiftable automatic AWD

Mazda CX-9 in California, United States
Jan 2013 - Jun 2018
Jul 2013

20700 mi
Hiss or whistle from under dash when brake pressed and held. Pedal mushy but brakes still worked. Diagnosed as a failed vacuum booster for the master cylinder. Replaced by dealer under warranty. 
Mazda CX-9 in Connecticut, United States
Sep 2012 - Feb 2016
Feb 2015

44000 mi
4 wheel drive system failed completely and dealer installed brand new(transfer case/transaxle) 
Dec 2015

61000 mi
Failure of valve cover gaskets, front engine seal, multiple engine seals all failed at same time. Emissions controls also failed and were replaced.  They obviously didn't do a good job because the valve cover gaskets and a seal on the side of the engine failed again a week later. I was told that the gaskets were installed improperly due to the lack of room, can't see what you're doing. 
Feb 2016

61000 mi
I had it with this car. The car would constantly stall while driving or in park or whenever. There are 6 codes currently showing on computer and with all the past issues we gave up on this car It's a lemon 
Mazda CX-9 in Alberta, Canada
Feb 2013 - Jun 2018
Nov 2015

26660 mi
Suspension/steering recall repair. ball joints and lower control arms replaced under recall. 
Mar 2016

29140 mi
Removed and replaced oil seals on output shaft. Rear axle seals were leaking fluid. 
Mazda CX-9 in California, United States
Oct 2012 - Aug 2020
May 2014

14000 mi
Transfer case output seal leaking causing burning oil smell due to proximity to exhaust system. The dealership replaced the seal and all seems fine now. 
Nov 2015

25700 mi
Replaced transfer case for ongoing burning smell when going uphill. Related to previous repair attempt of replacing output seal. 
Mazda CX-9 in Michigan, United States
Sep 2012 - Jan 2015
Mar 2013

6000 mi
TPMS light came on 
Mazda CX-9 in New York, United States
May 2013 - Sep 2016
Jun 2013

6000 mi
Driver side mirror vibration 
Oct 2015

30500 mi

US $200
Loose from end 
Mazda CX-9 in Colorado, United States
Sep 2012 - Jun 2018
Jul 2014

49000 mi
The brake booster failed. This possibility was mentioned in an extended warranty notice several months ago, but it was still a dangerous surprise when it happened while driving the car in heavy traffic. The brakes worked, but with a delay and more effort. 
Jun 2017

80000 mi

US $25
Replaced both headlights after one burned out. Sixth replacement in last 20,000 miles (3 years). Dealer knows this is a big problem for the CX-9, but has no suggestions. I have tried several different top quality bulbs, all seem to last about 6 months. 
Oct 2017

74000 mi

US $500
Replacement of warped front rotors, new front brake pads. 
Mazda CX-9 in New Jersey, United States
Sep 2012 - Jun 2015
Mar 2015

43000 mi
front wheel drive system leaking and replaced under warranty 
Mazda CX-9 in North Dakota, United States
Sep 2012 - Jun 2018
May 2013

6000 mi
Manual lift plastic gate handle broke off and had to be replaced 
Mar 2014

13000 mi
Differential started to leak. Was replaced with a brand-new unit, which started to leak again. Another replacement of seals in the differential and the car appears fine. Tool altogether 3 trips within the span of a month. 
Aug 2014

15900 mi
Rattling at certain RPM during acceleration. Dealer replaced an exhaust pipe. The noise is still there after the repair. Because it is not a safety issue, this will be addressed during the next PM visit to the dealer. 
Mazda CX-9 in New York, United States
Jul 2013 - Jul 2018
Apr 2017

71000 mi

US $100
Transmission had to be replaced. It started with a leak in one of the valves that resulted in all the fluid leaking and then the whole transmission failed 
May 2017

75000 mi

US $700
Brake pedal was very soft and emitted a hissing sound when pressed. It was diagnosed as failing master cylinder 
Jun 2017

75000 mi

US $100
brake switch had to be replaced since it was causing a check engine light 
Jul 2018

99000 mi

US $900
Differential, just a fluid change. 
Mazda CX-9 in Ohio, United States
Nov 2015 - Dec 2017
Aug 2015

29000 mi

US $100
Brakes became VERY soft, requiring standing on the pedal to stop. It began while we were on vacation in the mountains, which was obviously not ideal worrying about braking on a windy mountain road. 
Apr 2016

31000 mi

US $100
There was an issue with ignition wiring in one of the cylinders, causing a misfire and obviously poor performance. Oddly, no check engine light. Was covered under extended warranty. Dealer initially quoted replacing wiring for all cylinders, but only replaced wiring for the one cylinder after learning of the warranty. Don't recall total cost quoted, but I think it was ~$800. 
Mazda CX-9 in Pennsylvania, United States
Jun 2014 - Feb 2015
Nov 2014

35000 mi
Finish flaked off of steering wheel radio satellite controls for radio. 
Mazda CX-9 in Quebec, Canada
Jul 2015 - Mar 2017
Mar 2017

62620 mi

C $800
Power steering hose was leaking and oil was dropping on top the exhaust, we can smell burned oil in the car. Replaced power steering hose. Rear wheel bearing making grounding noise. It was replaced Had to replaced all Rotor and Pads Rattling noise coming from rear back passenger side. Mecanic could not find the source. 
Mazda CX-9 in Quebec, Canada
Apr 2013 - Jul 2018
Jun 2018

26040 mi
Replaced Front Transfer case 
Mazda CX-9 in Washington, United States
Feb 2016 - Jun 2018
Mar 2016

26000 mi
Transfer case seal failed, transfer case replaced. 
Sep 2017

48000 mi

US $400
Pulsing/vibration coming from rear disc brakes. Rotors and discs had plenty of material life left in them. Replaced discs and pads all around. Issue went away. 
Jun 2018

59000 mi

US $600
Rear passenger axle seal replaced Hard shifting transmission. TSB active for this transmission. Dealer did software update 
Mazda CX-9 in California, United States
Jul 2015 - Jun 2016
Aug 2015

59000 mi
Boosters Power transfer case 
Mazda CX-9 in New Jersey, United States
Jan 2015 - Dec 2016
Sep 2015

27000 mi
The brake booster completely failed making braking extremely difficult and dangerous. Brake booster was replaced under warranty. Parts in stock, known problem. 

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2011 Mazda CX-9

Engine not specified

Mazda CX-9 in Victoria, Australia
Feb 2011 - Apr 2011
Mar 2011

3100 mi
Initially, knocking noise from front right, mainly when turning left (no brakes applied). Ended up happening also when driving slowly and turning steering wheel left to right. Work Done: Replaced right engine mount. Fixed problem. Right drivers window was not tracking correctly and was rattling when when down part way while driving. Action taken: Replaced window motor and readjusted window to align correctly. Rear power tail gate would not lock correctly when closing. Intermitent. Action Taken: Greased, realigned hatch. Now working. 

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2011 Mazda CX-9 4dr SUV

273-horsepower 3.7L V6 6-speed shiftable automatic FWD

Mazda CX-9 in Florida, United States
Feb 2014 - Jan 2020
Apr 2015

44200 mi

US $150
Brake booster failure. Fixed under Mazda's extended warranty as it was a known issue for the model year. Passenger side power window motor failure 
Dec 2017

83000 mi

US $250
Broken wheel bearing caused noise in the front left wheel. More pronounced on smooth tarmac as it could be heard above the road noise. 
May 2018

89000 mi

US $1650
Needed to replace driver side front strut. Had to replace in pairs. Was bottoming out and was leading to poor handling. Replaced 4 rotors and brake pads at 88k miles. Used Mazda OEM rotors and pads. 
Jun 2019

106000 mi

US $249
Spark plugs replacement 
Mazda CX-9 in Washington, United States
Sep 2011 - Dec 2014
Nov 2011

1000 mi
We've noticed driver side mirror vibration. Problem was reproduced during test drive with a service tech. After that they inspected a mirror for possible tightening issues and decided to order a new one. Dealer installed new mirror, but this didn't fix the problem. 
Dec 2011

1000 mi
Dealer again confirmed problem with vibrating driver side mirror. This time they've contacted Mazda and ordered "some special kit, which will solve the issues". Dealer installed repair kit, but broke the mirror and had to order a new one, which delayed a repair to 5 days total. Rental car was provided at the dealer expense. Unfortunatelly there is no improvement after repair was finished. 
Mazda CX-9 in Texas, United States
Jul 2011 - Oct 2017
Apr 2016

55000 mi
Brake booster covered under warrantee 
Mazda CX-9 in Texas, United States
Sep 2013 - Jun 2018
Nov 2016

53100 mi
Power braking system was leaking 
Mazda CX-9 in Texas, United States
Apr 2012 - Jan 2018
Jun 2013

26000 mi
Somehow the housing for the cabin filter was broken. No one knows how. Maybe the company that did our inspection broke it without telling us. 
Mazda CX-9 in Tennessee, United States
May 2011 - Nov 2011
Nov 2011

8000 mi
11-2-11 A/C - started blowing hot air - had to reprogram - Mazda had a service notice on it but not notifying anyone - just reprogram if owner starts having problem 
Mazda CX-9 in California, United States
Aug 2014 - Jun 2018
Sep 2014

44000 mi

US $150
Battery needed to be replaced. 
Mazda CX-9 in Delaware, United States
Feb 2011 - Jan 2012
Sep 2011

12000 mi
Loud buzzing metal rattle from underneath vehicle towards firewall when accelerating, low speed to near shift points as engine revs. Sounds like loud exhaust rumble. Could not duplicate when at dealer, but vehicle inspected underneath. 
Mazda CX-9 in Texas, United States
Apr 2011 - Jul 2016
Sep 2011

5000 mi
heard a slight ticking noise from the engine under light load and low RPM. dealer could not replicate but advised that Mazda is aware of this common issue and has issued a notice that they are aware of the sound but not to be concerned. 
Feb 2012

9000 mi
Windshield wiper mechanism was grinding, dealer replaced front wiper link Ticking noise coming from engine off idle. 
Mar 2012

10000 mi
brake switch failed and replaced under warranty. 
Apr 2012

11000 mi
dealer agreed to replace engine to resolve the ongoing ticking issue 
Aug 2015

60000 mi
the brake vacuum booster failed (a known issue covered by a recall) 
Mazda CX-9 in Texas, United States
Jul 2015 - Oct 2017
Sep 2017

79000 mi

US $400
alternator failure 
Mazda CX-9 in Connecticut, United States
Oct 2015 - Dec 2018
Apr 2018

64788 mi

US $330
The driver's Master door window switch would not lower the rear left window. It did work in the up direction. The entire switch had to be replaced. 
Dec 2018

74000 mi

US $375
Driver's side door [window] motor had to be replaced. Air bag pump replaced due to recall 
Mazda CX-9 in Arizona, United States
Oct 2017 - Sep 2021
Jan 2019

113000 mi
Front brakes worm down to 3mm. Replaced pads and rotors. Back brakes still at 50%. Right front CV joint leaking. Replaced. Replaced original struts and shocks. One strut and one shock leaking. Replaced all four. 
Jun 2020

120000 mi

US $161
Steering sensor ring worn out. This caused the traction control light out to stay on. When vehicle was traveling in a straight line, the sensor showed the wheel turning which affected the traction control / stability control. Part was $ 10 and the dealer only charged me for the basic shop scan, part and replacement. I couldn't believe how little I was charged. 
Sep 2021

128000 mi
Had coolant leak. Found out the drain plug was cracked and almost sheared off. A large rubber washer originally hid the defect. Mechanic replaced the drain plug. As I am a regular customer, there was no charge to replace the plug and top off the coolant. 
Mazda CX-9 in Alabama, United States
Sep 2011 - Jun 2018
Oct 2015

116500 mi

US $350
Driver's side window motor failed. 
Feb 2017

155000 mi

US $360
Passenger side window motor failed. They replaced the motor. 
Mazda CX-9 in Arizona, United States
Mar 2011 - Oct 2013
Aug 2011

5700 mi
ABS systen returned a fault code so they replaced it 
Oct 2013

30000 mi
Replace Fuel Sensor Chrome was pealing off the Mazda emblem on the front 
Mazda CX-9 in Louisiana, United States
Jun 2011 - Jun 2018
Jul 2011 Bracket lose behind driver side dash board. The issue was promptly fixed in 1 day. 
Mar 2015

27000 mi
Broken driver side window motor. 
Mar 2017

47000 mi
Passenger side airbag 
Mar 2018

50000 mi

US $173
Passenger front and passenger rear left window broken. 3 out of 4 windows have failed. 
Mazda CX-9 in California, United States
May 2013 - Mar 2018
Jun 2013

46000 mi

US $375
Dealer mechanic disassembled LF axle assembly and added grease to location recommend by factory TSP. 
Nov 2015

80000 mi

US $150
Driver's door power lock actuator/latch replacement 
Mar 2016

84000 mi

US $200
Replaced howling left wheel bearing/hub assembly 
Oct 2016

94500 mi

US $300
Brake booster failure. A TSB advised of some known defective units, advised free dealer replacement up to 90,000 miles. Mine failed at 91.500. Dealer split cost. 
Mazda CX-9 in North Carolina, United States
Jan 2013 - Jan 2020
Jun 2017

153000 mi

US $525
Failed power brake booster was replaced. 
Mazda CX-9 in California, United States
Sep 2015 - Jan 2018
May 2017

81000 mi

US $500
Replaced brake Rotors and Pads, Serviced the transmission, and replaced fluid. 

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2011 Mazda CX-9 4dr SUV

273-horsepower 3.7L V6 6-speed shiftable automatic AWD

Mazda CX-9 in California, United States
Feb 2011 - Jun 2016
Feb 2012

8000 mi
Replaced the window regulator on driver side because I thought it made noise :) 
Mazda CX-9 in Alberta, Canada
Aug 2011 - Jul 2015
Dec 2011

4960 mi

C $54
Hesitates when starting from time to time. Have to let it crake for a while and some times have to turn it off and try again. When taking in for oil change no problem was found, as it started fine each time tried 
Mazda CX-9 in Pennsylvania, United States
Dec 2016 - Dec 2017
Jul 2017

98000 mi

US $150
Engine ping/knock under load between 2000-3000 rpm. Had extended warranty so tried to get engine serviced before 100,000 miles. First attempt, dealer said they could not reproduce. 6 months later I took the car to a different dealer and drove with a mechanic who heard the noise. They said it was a rattle in the pre-cat. I completely disagree. This is not a rattle, it's a spark knock. It's gotten worse over the past year. Super loud when the engine is cold. Fuel trims look good. I really think it's a timing issue. I've done almost everything short of pulling the heads. 
Nov 2017

112000 mi

US $75
Replaced one failed fuel injector and replaced O-Rings on all injectors while I had the fuel rail off. 
Mazda CX-9 in Pennsylvania, United States
Aug 2015 - Apr 2018
Jul 2017

96000 mi

US $670
Brake booster failed 
Mazda CX-9 in Pennsylvania, United States
Sep 2013 - Jun 2018
Sep 2017

56000 mi

US $180
Corrosion on exhaust pipe with hole in system. New pipes fabricated and replaced corroded ones. 
Mazda CX-9 in New Zealand
Feb 2018 - Apr 2018
Apr 2018

65100 mi

$560
Symptoms were harsh engagement from neutral to drive, hard downshift into 4th gear and fluctuations in throttle with cruise control on going uphill. TCM replaced to remedy harsh engagement and shifting. Transfer case replaced as oil condition poor and quantity low. Splines also worn. 
Mazda CX-9 in Massachusetts, United States
Aug 2014 - Aug 2017
Nov 2015

39100 mi
Was an occasional rattle; Mazda dealer found 1 rivet was off on the gas tank shield, so they installed a rivet for $14. Sound came back after a week. Was there getting an inspection stkr & inspecting the front end for the recall; no issue. 
Nov 2016

48800 mi

US $7
Had been making a low frequency "whining" noise when driving around 25-40mph. Mazda dlr said it needed a new power transfer unit, which also started to damage the transmission; both were replaced for free; retail cost: $9K! Free loaner suv. 
Mazda CX-9 in Washington, United States
Mar 2014 - Dec 2016
Oct 2016

59000 mi
The electric hatchback opened and closed fine, but would not latch properly. It needed a shove before it was firmly shut. The dealer replaced the motor, but that did not fix it. They then replaced all the parts with newly designed. 
Mazda CX-9 in Massachusetts, United States
Mar 2013 - Jun 2018
Jul 2016

80700 mi
Replaced failed purge valve 
Jun 2017

94000 mi

US $650
Brake booster replaced due to known design issue resulting in leaks and loss of stopping power. Extended warranty for this design issue ended in 2015. 
Mazda CX-9 in Pennsylvania, United States
Aug 2013 - Sep 2016
May 2014

43000 mi

US $200
Drivers side headlight had water inside the assembly. Had a bad seal. Had to replace entire headlight assembly. 
Apr 2015

59700 mi
Had to replace transfer case. Total cost was under warranty. 
Mazda CX-9 in Minnesota, United States
Sep 2012 - Jun 2018
Nov 2013

19000 mi
Rear axle seals replaced 
Mazda CX-9 in New York, United States
Apr 2011 - Sep 2014
Jan 2012

4800 mi
Problem with tailgate not locking shut. Update: later went away on its own. 
Mazda CX-9 in Vermont, United States
Apr 2011 - Jun 2018
Mar 2012

15000 mi
valve body leak 
Nov 2012

23100 mi
In cruise control and 40-55 mph on a slight up slope the transmission will surge about 500 rpm between 1500 & 2000 many many times before it will shift or lock on to a given rpm 
Jun 2016

41000 mi
Surging since car new. Found tsp that addressed the problem called madza got them to look at it. Couldn't make it do it for the factory rep but he agreededto do the latest update to the software. Problem solved 
Mazda CX-9 in Ontario, Canada
Jun 2011 - Jul 2014
Mar 2014

42780 mi
power steering pump failed dealer still has it pump not in after 10 days in shop,truck is unsafe to drive.email to Mazda they don't care either,shame on you Mazda its a Ford part and I found 6 locally at dealers in Sault Ste.Marie Ontario 
Apr 2014

42780 mi
truck was in shop for 29 days waiting for a new power steering pump to come from Japan WOW a power steering pump from Japan good job Mazda,now I get a notice that advises 4wd transfer cases are bad and warranty is extended to 140k on this!!! 
Mazda CX-9 in Michigan, United States
Mar 2011 - Jun 2018
Feb 2014

55000 mi
The transfer case failed, and when it was removed the tech discovered the transmission was also damaged. They replaced both under warranty. 
Mar 2014

56000 mi
During previous repair, mechanic missed some of the clips holding in the wheel well liners. They came loose, fell down and rubbed against my tires, and had to be replaced. 
Oct 2016

106000 mi
The brake booster failed. It would have been a warranty repair if I'd been under 80,000 miles. 
Mar 2017

115000 mi

US $400
Replaced front brake pads. 
Jun 2017

119000 mi

US $750
Wheel bearings on my rear drivers side wheel went bad - had to be replaced. And now the front drivers side wheel is making noise too. :-/ 
Jan 2018

126000 mi

US $500
Had to replace front drivers side wheel hub 

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2010 Mazda CX-9

Engine not specified

Mazda CX-9 in Texas, United States
Oct 2010 - Jun 2011
Dec 2010

16000 mi
the right window on the passenger side could not fully come down if I press the button. 

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2010 Mazda CX-9 4dr SUV

273-horsepower 3.7L V6 6-speed shiftable automatic FWD

Mazda CX-9 in Florida, United States
Jan 2011 - Apr 2012
Jun 2011

15000 mi
DOME LIGHT BUT THE CAR HAS TO BE IN THE SHOP ALL DAY SINCE THEY HAVE TO TAKE THE HEADLINER OFF, NO BIGGIE GOT A LOANER FOR A DAY 
Mazda CX-9 in Florida, United States
Jul 2011 - Aug 2013
Jun 2012

35000 mi
Motorized tailgate latch began malfunctioning - wouldn't close shut all the way (like something was in the way of the tailgate, but there wasn't). 
Mazda CX-9 in Georgia, United States
Aug 2010 - Dec 2013
Oct 2010

11700 mi
Verizon cell phone charger was stuck in power outlet. Dealer said that it was a known problem, and a TSB had been issued. 
Jan 2012

34000 mi
Bad Sunroof Motor  
Mazda CX-9 in Arizona, United States
Nov 2010 - Nov 2017
May 2012

31800 mi
A/C condensate drain line became clogged and water built up in reservoir behind glove box. 
Mazda CX-9 in Florida, United States
Oct 2010 - Nov 2011
Nov 2011

28000 mi
check engine lite came on. stopped by dealer. light reset. lite came back on again IN THREE DAYS. went back to dealer. diagnosed as bad fuel pressure sensor. part ordered. will install next week.....all warranty! 
Mazda CX-9 in Texas, United States
Jul 2010 - Jan 2015
Sep 2010

7000 mi
Trim screw in wheel well fell out, replaced by dealer. 
Oct 2010

7800 mi
Leak from damaged oil filter and missing drain plug gasket from poorly performed dealer oil change. Replaced oil filter myself and dealer replaced drain plug/gasket. 
May 2012

32000 mi
Gas cap warning light would come on intermittently. Cap was tested and found to be leaking. Replaced under warranty. 
Jul 2012

34700 mi
Driver's side HID low beam stopped working. Bulb was OK, dealer had to replace HID control unit. Gas cap warning light started coming on again. Fuel tank solenoid valve replaced under warranty. 
Mazda CX-9 in Minnesota, United States
Apr 2013 - Jun 2018
Jun 2015

50000 mi

US $200
Tie rods replaced 
Jun 2018

86000 mi

US $450
Front rotors and pads 
Mazda CX-9 in North Carolina, United States
Sep 2010 - Jul 2011
Oct 2010

16000 mi
TCS Off(Traction Control System) and the symbol were lit a couple of times in the initial weeks of purchase as Certified Pre-Owned. Took to service as a preemptive measure. The codes came up okay and was told to forget about them. 
Mazda CX-9 in Virginia, United States
Jun 2010 - Sep 2013
Jun 2011

15000 mi
Automatic tailgate would not close. Could not close rear hatch, manually or otherwise. 
Jul 2013

41000 mi

US $600
Had to replace rear driver side wheel bearings 
Mazda CX-9 in Tennessee, United States
Oct 2012 - Nov 2012
Nov 2012

26000 mi

US $390
Very noticable grindingperiodic noise from the front end. Dealer checked the bearings, brake pad and rotor, rotate tires but the same noise from front end still there. Dealer claimed it is the tires make the "noise". 
Mazda CX-9 in Pennsylvania, United States
Oct 2018 - Oct 2018
Oct 2018

96000 mi

US $750
Check engine light on. Coded for bad injectors on one cylinder. Changed all 6 of them 
Mazda CX-9 in Guanajuato, Mexico
Oct 2010 - Jun 2018
Sep 2017

56420 mi

$300
The brake booster and brake master cylinder had to be replaced. The guys from the warranty department covered around 40% of the cost. 
Mazda CX-9 in Florida, United States
Jul 2014 - Aug 2015
Jul 2014

57000 mi

US $800
Master cylinder, booster. 
Jun 2015

64000 mi
brake cylinder 
Mazda CX-9 in Ohio, United States
May 2014 - Jun 2018
Dec 2014

55000 mi
Whine noise at low rpm at 40-50mph. Transmission replaced under warranty 
Oct 2015

68200 mi
throttle body replacement front lower arms two days later 
Sep 2017

91000 mi

US $100
break vacuum booster replaced (extended warranty) 
Mazda CX-9 in California, United States
Jul 2016 - Sep 2016
Aug 2016

76500 mi

US $330
Had to replace driver's side rear wheel bearing. 

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2010 Mazda CX-9 4dr SUV

273-horsepower 3.7L V6 6-speed shiftable automatic AWD

Mazda CX-9 in Washington, United States
Jul 2011 - Sep 2017
Mar 2017

55000 mi

US $220
TCS system switch failed, and needed to be replaced. 
Mazda CX-9 in California, United States
Nov 2010 - Oct 2016
Sep 2015

51000 mi
Hissing noise when brake pedal pressed. Brake booster replaced part of the warranty campaign 
Mazda CX-9 in Indiana, United States
Apr 2014 - Jul 2017
Jun 2014

40000 mi
leaking transfer case 
Mazda CX-9 in New York, United States
Sep 2011 - Sep 2018
Dec 2017

127000 mi

US $500
Needed to replace the ballast on the HID headlights. 
May 2018

134000 mi

US $5500
Replaced with a used engine with 64 K miles and the water pump. A time up was also done. 
Mazda CX-9 in Massachusetts, United States
Jul 2010 - Jun 2015
Oct 2013

47500 mi
Transfer case failed. Able to drive to dealer. 4 hour repair. 
Mazda CX-9 in Ontario, Canada
Mar 2011 - Apr 2013
Mar 2013

37820 mi
required new transfer case 
Mazda CX-9 in Pennsylvania, United States
Jun 2010 - Jun 2018
Dec 2010

10500 mi
Experienced a severe sulfur/burning smell once the car was warmed up and on the road. Dealer could not replicate; we were told it was normal and provided a TSB for several different Mazda models regarding the catalytic converters. Sulfur smell was caused by a bad AWD transfer case; the smell was the oil inside burning up. Dealer replaced the transfer case under warranty; problem is resolved. Replaced bad AWD transfer case under warranty. We experienced a bad sulfur smell for several weeks, which was finally diagnosed as the oil in the transfer case burning up. 
Sep 2012

29000 mi
Experienced hesitation under light load, and manual shifting was not working. Bad driveshaft identified; did not fix the problem. Dealer replaced the driveshaft, transmission, and ignition coils under warranty. 
Dec 2013

42000 mi
Passenger side front axle came unseated under hard acceleration. Dealer re-seated. Did not require replacement this time but might if it reoccurs. 
Jul 2017

72000 mi

US $100
Vacuum booster had torn membrane and was not reliably holding pressure. This was a known issue and Mazda had extended the warranty for that part. Our vehicle was ~6 months beyond the warranty, but the dealer worked with us an charged us only $100 for the repair, which otherwise would have been ~$700. 
Mazda CX-9 in Kentucky, United States
Jun 2010 - Mar 2015
Jan 2012

25000 mi
Accessory outlet - blown Fuse. Also light bulb driver side map light, took less than ten minutes to change. Clunking sound applying and releasing brakes 
Mazda CX-9 in Wisconsin, United States
Jul 2010 - Aug 2011
Sep 2010

3000 mi
Scratches/Dents caused by dealer delivery, plus painted door for poor paint issue from manufacturer 
Mazda CX-9 in Minnesota, United States
Nov 2010 - Mar 2019
Jan 2011

27700 mi
Seat heaters for both seats, recalled but mine had already failed. 
Mar 2016

41000 mi

US $400
Control rod bushing. 
Mar 2017

43000 mi
Control arm recall due to possible rusting and failure. 
Jan 2019

55000 mi

US $1100
Rear wheel bearings. 
Mazda CX-9 in Connecticut, United States
Jun 2010 - Sep 2017
Aug 2016

69400 mi
Driver's window is off track for the second time and needs a costly repair which we are currently considering. 
Sep 2017

80000 mi

US $3100
AWD Transfer case failed and also damaged transmission. Very disappointed to say the least. 
Mazda CX-9 in New Hampshire, United States
Jul 2010 - Mar 2016
Jun 2013

58000 mi
Wheel Bearings 
Jul 2015

84500 mi

US $1050
Leak, wouldn't hold AC coolant. Major repair, several hours to replace worn parts. Wheel bearing, driver front 
Mazda CX-9 in Illinois, United States
Jan 2011 - Sep 2017
Mar 2012

74000 mi

US $200
Removed rusted bolts from heat shield and put in new ones Removed rusted bolts from heat shield and put in new ones 
May 2012

82300 mi

US $735
new computer for locking system, module under the dash was bad 
Oct 2012

104500 mi

US $1700
transfer case went bad replaced with new one 
Jul 2015

266200 mi

US $600
Needed new wheel bearings 
Mar 2016

297000 mi

US $1000
New struts ,cv joints and brakes over a period pf three trips !!! And yes we are still driving it! I gave it to my son who lives in Chicago I dont expcet it to last terribly long now. We do keep oil changed but.. 
Mazda CX-9 in Connecticut, United States
Jan 2013 - Jun 2015
Feb 2013

48800 mi
all wheel drive not operating. in snow car will not move only front tires spin and truck seems to lose power and go nowhere dealer says computer firmware needed or bad transfer case will be taking car back to dealer 2/21/2013 keep you posted 
Mazda CX-9 in California, United States
Dec 2012 - Jun 2013
Jun 2013

36000 mi

US $900
Leak in master cylinder caused problem with vacuum in booster brake. Both have had to be replaced. Very premature and a problem reported for 2008 model but not recall. 
Mazda CX-9 in Indiana, United States
May 2013 - Jul 2013
Jul 2013

35000 mi
Torque convert was not coming out of lockup properly. Dealer changed transmission fluid under warranty and problem seems to be gone. 
Mazda CX-9 in Washington, United States
Aug 2013 - Dec 2016
Aug 2016

55000 mi

US $350
Torque convertor hesitation 
Dec 2016

57000 mi
Torque Convertor was failing requiring a new transmission and torque convertor. 
Mazda CX-9 in Texas, United States
Dec 2011 - Sep 2014
Mar 2011

8000 mi
replace abs module and reflash TCS 
Jan 2014

US $15
Replaced front/rear blower relay (part L1Y1-67-730) because AC/heater blower came on when taking key out of ignition. 
Mazda CX-9 in Pennsylvania, United States
Sep 2013 - Jun 2018
Sep 2013

47000 mi
Wheel hub bearing was replaced 
Mazda CX-9 in Massachusetts, United States
Jun 2014 - Sep 2021
Dec 2014

58000 mi

US $600
Rear suspension gave out Power transfer unit cracked and needed to be replaced 
Aug 2016

68400 mi

US $500
Back calipers were stuck 
Feb 2018

79000 mi

US $100
Needed a relay replaced 
Dec 2020

109000 mi

US $600
Both rear wheel bearings needed replacing 
Mazda CX-9 in Saudi Arabia
Jul 2012 - Jan 2014
Sep 2013

22940 mi
Engine light came on. Loss of power and transmission disfunction. Gears not shifting properly. 
Mazda CX-9 in Georgia, United States
Feb 2015 - Jun 2018
Apr 2016

102200 mi

US $1100
Left Front Brake Caliper was sticking, had to be replaced. Rear Wheel bearing failed, entire hub assembly had to be replaced. 
Jun 2016

108000 mi
A/C drain line became clogged. Used shop vac and attachment to suck out obstruction. Appears build up of water may have affected blower fan. 
Feb 2018

157000 mi

US $650
Alignment attempted by dealership. Broke bolt and back toe adjuster was seized so needed to be replaced. 
Mazda CX-9 in Ontario, Canada
Feb 2014 - Jun 2016
Mar 2014

50220 mi

C $150
Engine light came on for second time in 3 months. First issue said to be fuel pressure sensor. This time was ignition coil and spark plug for cylinder # 4. After both repairs, car ran fine. 
Jul 2014

54440 mi

C $350
Tire light came on, due to slow leak. Had to replace TPMS for affected tire as it was corroded and leakef air. 
Jan 2015

61380 mi

C $200
Fuel tank sensor replaced. Was told by dealer that the sensor was "gummed up" by the coating used at Krown rustproofing. Have not yet gone back to Krown to ask them if possible. 
Apr 2015

63640 mi

C $400
TPMS replaced in one tire 
Jun 2016

78120 mi

C $500
Cracked wheel bearing replaced. Leaking water pump replaced. 
Mazda CX-9 in Michigan, United States
Apr 2011 - Jun 2014
Aug 2011

6500 mi
Minor leak from rear differential oil seal (right side). Oil seal replaced. 
Mazda CX-9 in Massachusetts, United States
Dec 2011 - Oct 2016
Mar 2012

34000 mi

US $70
Car would not start in the morning. I had thought something was draining the battery at night, but after taking the car to a dealer (they said the battery was fine), the second dealer replaced the battery. 
Dec 2013

67000 mi

US $1400
Noise when accelerating from transmission. Replaced transfer case. Not covered under warranty, as my car is over 60k miles and no longer covered under powertrain warranty. 
May 2015

93000 mi

US $180
TPMS sensor on the rear left wheel no longer working. The tire pressure light went on. When I took the tire pressure on the left rear wheel, the valve blew in, and the air pressure leaked. 
Jan 2016

US $400
Tire pressure valve blew out on front right tire and caused tire to blow out. Plastic key knob broke off. 
Mar 2016

107000 mi

US $200
Control arm recall. Outer right front tie rod replaced. 4 external bulbs needed to be replaced 
Mazda CX-9 in Washington, United States
Jul 2012 - Sep 2012
Aug 2012

66700 mi

US $1300
replaced steering rack assumed new, but used part installed. still too much play in the steering. 
Mazda CX-9 in Connecticut, United States
Dec 2010 - May 2017
Aug 2014

67000 mi
Transfer case failing - covered by Mazda up to 100k miles per recent mfg letter 

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See TrueDelta's information for all SUVs
See TrueDelta's information for all Mazda models.

2012 Mazda CX-9 Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2012 Mazda CX-9 problems occur, check out our car reliability stats.