hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
99,533 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2008 Mazda CX-9 drivetrain problems

drivetrain problem

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2008 Mazda CX-9 Owner Comments

problem #12

May 302016


  • 140,000 miles


Vehicle is AWD. In May 2016, tcs & ABS dash lights came on as well as the depiction of a vehicle skidding. Brought to my local mechanic who said he was getting fault codes but could not diagnose. Suggested we go to the dealer. Went to local Mazda dealer who diagnosed that both the transfer case and transmission gears were stripped, that the vehicle was now operating in 2 wheel drive and that the ABS was not functioning because of these issues. Dealer quoted $8,136 to fix. We assumed there must be some recall on this issue but could not find one. We then brought to a local transmission expert who opened it up and described same problem. Stripped gears on both transmission and transfer case. He called dealership parts dept. And said they had several of the major parts he needed to repair. He thought was a sign that dealer was seeing many of these same problems as these were not parts a dealer would typically stock. I discovered many similar complaints on line. Some noted Mazda recalled 2010 and newer for the same problem. Also said it may be a onboard computer issue that caused the rapid wear of the transfer case and transmission. Very concerned that Mazda is putting this on the consumer when it seems very likely to be some design or manufacturing defect.

- Marshfield, MA, USA

problem #11

May 122016


  • 92,000 miles
The contact owns a 2008 Mazda Cx-9. the contact smelled burning rubber and heard a clicking sound when driving the vehicle. The vehicle was not diagnosed nor repaired. The manufacturer was not notified of the failure. The failure mileage was 92,000.

- Shaker Height, OH, USA

problem #10

Jan 012016


  • 139,000 miles
I have a 2008 Mazda Cx-9 with 139,000 miles on it. The transfer case has destroyed the transmission. The transmission was compromised by the faulty transfer case over a period time. I've done extensive research on this and this is absolutely a known issue that the transfer case is ruining these transmissions. I've also discovered that the Mazda dealerships in my area are selling upwards of 4 transfer cases per week and often out of stock due to this replacement of the faulty transfer case coming out of the factory. I cannot understand why Mazda hasn't sent out a bulletin to it's valued customers regarding this. I can only imagine the lack of transparency on this is due to the large financial impact it may have. I am contacting you to request that you take this issue to whomever can help resolve my case and provide significant financial assistance towards the replacement of my transmission and faulty transfer case. I've been told that Mazda apparently has a "software update" that would fix this issue - but I find it impossible to believe as I have never received any notification of this being an issue or any software update to fix this faulty transfer case. I find it hard to believe that a software upgrade is going to fix a mechanical issue and cannot find any evidence of this "software" update being legitimate. Mazda supposedly makes a quality product and supposedly cares about customer loyalty and service. I would say that not telling your customers about a faulty part (know issue on factory transfer case) that destroys the transmission and causes significant financial hardship is not fair or reasonable customer service.

- Kensington, NH, USA

problem #9

Dec 292015


  • 89,645 miles


Front axle fell off the car. Could hear strange noise when backing up. Put in park in driveway and the car started to roll backwards. Pulled over to sidewalk and applied emergency brake. Called tow truck and axle was found under the car.

- Norwood, MA, USA

problem #8

Dec 012015


  • 92,000 miles
The contact owns a 2008 Mazda Cx-9. the contact stated that the vehicle failed to accelerate when the accelerator pedal was depressed. The front driver and passenger wheels spun, but failed to move the vehicle. The vehicle was brought to an independent mechanic who diagnosed that the transfer case needed to be replaced. The vehicle was not repaired.the manufacturer was not notified of the failure. The failure mileage was approximately 92,000.

- Omaha, NE, USA

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problem #7

Oct 022015


  • 80,000 miles
Transfer case failure which can cause transmission failure. Found during recent inspection. Looks the problem is in design. Mazda recalled the transfer case from 2010 model and later but not before. Since the same part is used in earlier models requesting recall on earlier models too.

- Bothell, WA, USA

problem #6

Jul 012015


  • 101,000 miles


Gear oil leaking out of the transfer case vent tube. This is not a normal function. Only way to check level is to remove fill plug and stick finger in. The only safe way to get to this is putting vehicle up on a lift. Researched online and many others are having similar issues. If not caught right away transfer case can fail along with transmission. There is no info on changing this oil at certain intervals. Failure of these two components can happen while driving and could result in injury. I think this should be looked into.

- Lathrop, CA, USA

problem #5

May 152015


  • 104,000 miles
I was making a right turn from a parking lot onto a road with my two children in the car when a loud crunch happened, the vehicle jerked left while still moving forward and I was unable to steer or break. The car came to an abrupt stop and I couldn't get the driver's door open. I walked around to the front of the car while in traffic and noticed loose parts that had been ejected from the wheel, leaking break fluid, and the driver's side front wheel was no longer attached and had wedged under the car. The car was unable to be moved out of the road thus creating a traffic jam. The tow truck driver said the control arm was broken and that my girls and I are lucky that we were not seriously injured. The car was towed to the Mazda dealer service department 4 days ago and I have not heard from them. Is this something that is covered under tread liability laws? I have photos of the car/wheel that were taken at the scene if needed.

- Leesburg, VA, USA

problem #4

Apr 292015

CX-9 6-cyl

  • 163,000 miles
While making a right turn into a parking place, the right front ball joint broke and cv joint became disconnected, causing the wheel to become disconnected from the car and pushing the wheel well back under the passenger door, making it inoperable. The tow driver said I must have hit something really hard, but in the two and a half years I've had this car, I've never hit anything! I drive a lot for my job and am grateful this didn't happen while I was traveling 70 mph on the highway. It was very scary and has shaken my confidence in this car. I had the car repaired on an emergency basis, but the mechanic told me while the other ball joint was safe enough for me to make the trip home (350 miles), I should definitely get it checked out as well, as it looked suspect for the long term. The car is at the mechanic now, and I was a nervous wreck driving it home earlier today.

- Mount Pleasant, SC, USA

problem #3

Nov 042014


  • 142,000 miles
The contact owns a 2008 Mazda CX9. The contact stated while driving approximately 10 mph, an abnormal noise emitted from the vehicle while applying the brakes. The failure recurred and the vehicle stalled. The vehicle failed to restart and was towed to an independent mechanic for diagnostic testing. The technician diagnosed that the transmission needed to be replaced. The vehicle has not been repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 142,000.

- Metuchen, NJ, USA

problem #2

Jul 132011


  • 50,000 miles
There have been a multitude of problems on the vehicle (two sets of brakes, tierod, electrical overhaul vacuum hoses...) the major issue has been oil leaking. This past summer (2011) there was an oil leak. The dealer had the car for several days before diagnosing that it was the rear main seal. The seal was replaced (car was at dealer for nearly two weeks.) this fall (2011) oil was still leaking. After several days the dealer contacted Mazda corporate and they suggested replacing the transmission, claiming it was not uncommon. The dealer replaced the transmission. Winter/spring 2012 oil still leaking, car is currently at the dealer - claiming it is the rear main seal. Again" wouldn't that have been replaced with the new transmission"

- Holliston, MA, USA

problem #1

Jul 192008


  • 1,750 miles
Drive shaft failure on 2008 Mazda CX9 1,750 miles, drive shaft needs to be completely replaced, according to dealer not the first one they have seen (ramsey Mazda NJ) drive shafts should not fail on new cars, can be dangerous.

- New City, NY, USA

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