definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
37,750 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 electrical problems

electrical problem

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2008 Mazda CX-9 Owner Comments

problem #4

Oct 012013

CX-9 6-cyl

  • 65,000 miles


Returned to vehicle after work (5pm) and saw that both side mirrors were damaged. A closer look revealed that the painted portion to both side mirror housing units had melted. It appeared the plastic had melted from internal heat. There were no burn marks on the outer portion of the unit. The plastic had shrunk to a shriveled and wrinkled appearance. Brought the vehicle to a Mazda dealer (escondido, California). The vehicle was inspected and nothing was found to be wrong. I was told there was no electrical problem and the melted side mirror units were melted from the sun. I do not live in Arizona, New Mexico, or southern Nevada where temperatures reach above 105 degrees consistently. Temperatures typically reach 80-95 degrees.

- San Marcos, CA, USA

problem #3

Jan 022014


  • miles
2008 Mazda CX9 smart key, after reprogramming ($350) new fobs ($100 each) and numerous battery replacing the smart key still will not function as promised, wirelessly unlocking, locking and starting the vehicle. Here is only one key hole on the vehicle, which cases he owner/ driver/ user to constantly walk around the vehicle to lock/ unlock and/or start the car. It also greatly increases the risk of loosing the only hard copy of the key costing another $350 in programming and cutting.

- Ewa Beach, HI, 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

Mar 132012


  • 36,000 miles
The contact owns a 2008 Mazda Cx-9. the contact stated that while driving 30 mph, the remote key warning lamp illuminated and the vehicle stalled. The contact mentioned that he was able to restart the vehicle almost immediately after the failure. The vehicle was taken to the dealer who was unable to diagnose the failure. The manufacturer was made aware of the failure who did not offer any assistance. The vehicle was not repaired. The failure and the current mileage was 36,000.

- Pleasantville , NY, USA

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