4.8

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
21,394 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.

2016 Mazda CX-9 fuel system problems

fuel system problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2016 Mazda CX-9:

Unsubscribe any time. We don't sell/share your email.

2016 Mazda CX-9 Owner Comments

problem #7

Mar 012024

CX-9

  • miles

A D V E R T I S E M E N T S

Vehicle -??surges-?? at idle. 300-500 RPMS at a time. Sometimes the brakes hold and sometimes not. Have nearly been in 3 collisions the last 2 days because of this issue. The ECM codes indicate throttle body or TPS issue, both of which have been unfounded. Vehicle has 63,000 miles. Researching this topic online found that many others have had this issue with no associated safety recalls noted. I am hoping to bring light to this so someone doesn-??t have to be injured or killed to have this rectified.

- Oconomowoc, WI, USA

problem #6

Jun 302022

CX-9

  • miles
Traveling on the highway going on a road trip. Had vehicle inspected prior and no fuel system problems were noted. I was going 75mph with my family when there was a coasting feeling in the car. I looked and my check engine light popped on and my car immediately would not accelerate and we quickly lost speed. By the grace of God were we able to pull over safely! Code P0132 was the engine code and after an hour, the engine light went back off and we were able to keep a safe speed traveling home. After speaking with a mechanic and dealership, I learned that this was a common problem with the Denso fuel system. My vehicle was not included in a recent recall that included a different year of my vehicle. If manufacturers are aware that a major defect is out there, how many people have to have an accident or potentially cause a huge accident because a car made 2 years prior with the same part from the same manufacturer has the same dangerous problem? It-??s ridiculous and I hope you look at this near fatal issue that has effected thousands of people, whose vehicles-?? were made in 2017, 2016, 2015 and are not included in the recall.

- Katy, TX, USA

problem #5

Feb 072020

CX-9

  • 55,000 miles
I just purchased my vehicle about 3 months ago. I was running errands about a week after purchase and was heading home on the highway when the gas notification came on displaying 27 miles left and advised me to get gas. I was about half mile from the exit and the vehicle check engine light came on and it started stalling. Thank fully I was able to get over to the median just in time when it shut down completely. I called roadside and the dealer and explained what happened. I had it towed back to the dealer and they advised me it was because I ran out of gas. I explained it had a quarter of a tank and displayed 27 miles left and it didn't even give me 1 mile to get off the exit. It happened to my husband as well recently and I spoke to a certified Mazda dealer and they explained it could be that the gas tank has a dent causing the reading to be off or one of two floats could be damaged and not reading correctly. I was advised this was a common issue with my year but it's not on a recall. I usually get gas when it hits a quarter of a tank but now I'm afraid that I do it at a half a tank. This should be a recall problem as it causes the car to stall immediately which is dangerous. I had kids in my vehicle in an ice storm...I need to have this fixed but it's well over $800.

- Danbury, CT, USA

problem #4

Feb 232020

CX-9

  • 43,500 miles

A D V E R T I S E M E N T S

My Mazda Cx-9 ran out of gas on a major highway (route 90 in boston) and the gas gauge read half full. No 'out of gas' light went on and range (under information) said 191 miles remaining. My Mazda dealer told me the software needed to be reset (not done yet as of this writing). It is a major issue if the gas gauge is not reading properly and this is a software issue (a bug?). Mazda needs to fix this for all Mazda's and issue a recall so it does not happen again.

- Southborough, MA, USA

problem #3

Dec 312019

CX-9

  • 34,000 miles
While driving the car in the 287 interstate highway in New Jersey, I got the check engine light out of the blue and the car started decelerating in the high speed lane. Luckily I was able to manage and get the car to the road side shoulder. I was not able to start the car after this incident. We had to tow the car to the Mazda service center in greenbrook, New Jersey. After running the car diagnostics (error code - P0192), they informed me that they had to update the PCM (power control module) software. Thats the only explanation which they gave which made no real sense. They did not provide any information why this issue occurred and what was done to make sure this issue does not occur in the future.

- Bridgewater, NJ, USA

Search CarComplaints.com for these popular complaint phrases...

problem #2

Nov 162018

CX-9 4-cyl

  • 17,061 miles
11/16/18 towed for inoperabilty. Stuck fuel injector/ ruined engine. All panel lights came on. Kept car for 57 days. Fuel injector # 1 failed. We were driving onto interstate. While working on car, exhaust stud broke off into turbo charger housing. Drilled out and rethreaded took back to Mazda dealer to C/O about swooshing noise in R dash said they did not hear. This occurring with acceleration 2/7/19 while driving out of state on interstate, swooshing noise R dash lost acceleration while passing. St peters, mo dealership had to put back on the turbo hose & clamp 5/6/19 back home and again heard the swoosh noise on acceleration. Dealership replaced gasket to turbo charger / air leak with smoke test 9/14/19 again became inoperative while driving out of state immediately after passing large truck, lost acceleration with pedal to carpet. Was told in limp mode smelled something in car compartment. Stuck on narrow county road. Limped to turn off. On inspection by tow truck person, stated was pouring gasoline from front of car. 'this could have caught fire due to 90+ degree temp in tex. Fuel injector # 4 exploded mechanic on inspection told serv mgr this car was put back together in a shoddy manner. The hose to fuel injector had previously been routed wrong when engine replaced. Now waiting on malfunction of fuel injector 2&3. scared to drive car. C/O to Mazda customer rep. His response well U have warranty until 4/2024. That is B/C we took extended warranty. Hollingsworth Mazda in baton rouge, la closed reason unknown. Consumer stated error to vehicle speed instead of 10-15 mph.

- Baton Rouge, LA, USA

problem #1

Aug 032016

CX-9

  • 200 miles
I bought the car Saturday. Four days later, I filled the tank at 2:00 pm for the first time. I then drove about 30 miles. When I arrived home at 5:00pm, I parked in the garage. I noticed the odor of fuel as soon as I exited the car and checked to make sure I had secured the gas cap, which I had. Thirty minutes later, the entire downstairs of our house smelled like gasoline. The garage was consumed with fuel odor, and the fire potential caused us to return the car to the dealership immediately after that. The fuel odor was present within the car as well.

- Las Vegas, NV, USA

Not what you are looking for?