The contact owned a 2020 Mazda CX-9. The contact stated that while driving approximately 60 MPH, a second vehicle crashed head-on into the front of the vehicle. During the head-on crash, no air bags inside the vehicle deployed. The contact sustained a concussion and right eye injury and later received medical attention. A Police report was filed at the scene. The vehicle was destroyed and towed to a local storage facility. No information was available concerning the second vehicle's occupants. The cause of the failure was not yet determined. The manufacturer was notified of the failure. The local dealer was not contacted. The failure mileage was 130,000.
The worst 2020 Mazda CX-9 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine5
- Electrical4
- Driver assistance3
- Fuel system3
- Brakes2
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine5
- Electrical4
- Driver assistance3
- Fuel system3
- Brakes2
- Transmission2
- Airbags1
- Body1
- Tires1
- Visibility1
Recalls 1
Seats: mid/rear assembly
- What is wrong
- Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-9 vehicles equipped with 60/40 split bench second-row seats. The left-side second-row seat may unexpectedly slide forward during a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 210, "Seat Belt Assembly Anchorages."
- Risk
- A seat that slides forward during a crash can transfer excessive force onto a belted occupant, increasing their risk of injury.
- Remedy
- Dealers will replace the internal parts of the affected second-row seats, free of charge. Owner notification letters were mailed November 4, 2021. Owners may contact Mazda customer service at 1‑800‑222‑5500, Option 4. Mazda's number for this recall is 5221I.
Recall number 21V750000 · Recall details
Technical service bulletins for the 2020 Mazda CX-9 329
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- CSP13 - customer service program - mazda connect infotainment system limited warranty extension
- Engine
- CSP13 - customer service program - mazda connect infotainment system limited warranty extension.
- Dear Mazda Owner: You are receiving
- CSP11 - coolant leaks at cylinder head warranty extension
- Please review the entire Dealer Email below announced on October 17, 2024 for full details regarding this...
- Subject: Update – Campaign Warranty Claim Response Enhancements – Modules Not Repaired for Certain...
- This bulletin supersedes the previously issued bulletin(s) listed below
- Description
- This SA supersedes the previously issued SA(s) listed below
2020 Mazda CX-9 fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 2.5L 4‑cyl | FWD | 22 | 28 | 24 |
| 2.5L 4‑cyl | 4WD | 20 | 26 | 23 |
What 2020 Mazda CX-9 owners say
Most recent owner complaints, unedited.
The mazda Cx-9 is having the same fuel pump issues that was recalled up until 2018 models. The issue with the lean codes and faulty fuel pump continues
Prior to [XXX] The vehicle ran rough and sputter excessively. I took car to local repair shop. Diagnostic equipment determined the fuel injector needed to be replaced. Vehicle ran better but continued to sputter and ride rough on occasion. Prior to [XXX], the vehicle stopped operating properly. The vehicle would not travel faster than 20 mph and sometimes would stop completely in the middle of the road. This was a hazardous situation. The vehicle seemed to be starved for fuel. All warning lights were displayed on the short trip home. Being too dangerous to drive the vehicle was towed to a different repair shop. Diagnostic equipment determined the throttle body needed to be replaced. This was done prior to [XXX]. I drove the car less than 5 miles after the 2nd repair and the same behavior returned. Vehicle would sputter run rough sometimes stop etc. All warning lights were displayed. Vehicle seemed to be starved for fuel. Vehicle was towed back to the repair shop. Next step will be to contact Mazda dealership in Huntsville AL and see if they will accept the Vehicle for repairs after I have it towed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Warning signal front camera sensor system malfunction Forward Smart City Brake Support malfunction When this initial happen the steering wheel becomes hard to maneuver than releases The front and back cameras are clear from any debris or obstructions What should I do next?
All 4 of my BH255/50R20 XL 109v NOKIAN WR G4 vehicle tires are exhibiting abnormal tread degradation and excessive sidewall cracking. The tire defect includes a circumferential crack along the top of all 4 tires, where the top of the tire's sidewall and tread base meet. Upon tire inspection, the structural integrity and safety of these tires with continued usage is questionable. The tires in question are only 26 months old and have approximately 31K miles of usage.
The information screen is getting 'spider cracks" spreading across the face and turning opaque making the information unreadable. Mazda is apparently aware of this defect and issued a TSB for earlier models. Dealers were unhelpful and quoted $1000 - $3000 to repair depending on the VIN.
The vehicle will hesitate/stall while driving down the road. The vehicle has done this multiple times and has actually shut off on 2 different occasions while at a stop. on 2 occasions now the vehicle has not wanted to start. I have taken vehicle to Mazda dealership and they can never duplicate it. When they check for any codes, the vehicle computer does not give accurate times when happened. This last date I took it to them 6/9/25, the computer said it happened 4000 miles ago. The time before, I took it in the morning it happened, 5 min after it happened and the computer said it happened 10 starts ago. The last time, 6/9/25 they said they suspect fuel pump going bad, but until the vehicle gives a "check engine" light or dies all together they are not 100% sure. The vehicle is unsafe if it dies in the middle of the freeway/road with no warning to myself or the other vehicles around me. This has been going on for at least 1 year now, maybe longer Dealership has all records. Seeing how the 2018 & 2019 Mazda CX-9 had fuel pump recalls makes me wonder if the 2020 should have been included in this recall. This has been an on going problem.6/7/25 was most recent incident.
Vehicle randomly displays "smart brake system malfunction," "forward smart city brake malfunction" and " front radar system malfunction." This has been going on for at least a year. I will be driving on a highway, trying to accelerate and these messages will pop up. I'm not able to accelerate when these messages pop up and I have to turn on my hazard lights and pull over to the side of the road. The only thing that clears these warnings are for me to completely shut down my car and restart it. Luckily I have been able to get over to the side of the road on the highway without an accident, but these warning lights pop up when it's sunny out and there is no reason for the car to act the way it does. I took my car to the dealer the first time it happened and paid several hundred dollars for them to tell me that they don't know why it happened. There are several forums posted online with people having the same issues. Online posts say to make sure the sensors are clean and that the malfunction can activate if it's too hot, rainy, snowing or foggy? In my experience, it has happened only when it has been sunny. When the system decides to malfunction, the car will not accelerate, and it could make it easier for the car to be hit by another car. It's like the car just shuts down.
I've had it repaired for over 30+ times. I'm tired of the car not being fixed. The last visit I was told maybe its the way I drive.
The vehicle was overheating and a message came up that power will be reduced. Then it would go away and come up every 3 minutes while driving. I brought it to the service center, we filled it up with coolant and the issue kept coming back this time with a lot of white smoke coming out at vehicle start up. My mechanic said this is a bigger issue most likely to do with a coolant leak at the cylinder head. There is a technical service bulletin but no recall as of yet.
Compare the 2020 Mazda CX-9
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Other model years
20072008200920102011201220132014201520162017201820192020202120222023
Questions about the 2020 Mazda CX-9
Is the 2020 Mazda CX-9 reliable?
Owners have filed 19 complaints about the 2020 Mazda CX-9, fewer than a typical CX-9 model year.
What is the 2020 Mazda CX-9 year score?
The 2020 Mazda CX-9 scores 88 out of 100 (good). The score compares it with the other model years of the Mazda CX-9: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2020 Mazda CX-9?
Engine and cooling, with 5 complaints. Next is electrical (4).
How many recalls does the 2020 Mazda CX-9 have?
1 recall, covering seats.
What year does the Mazda CX-9 have bad engine?
The Mazda CX-9 model years with the most engine complaints are 2018 (78 complaints), 2016 (72 complaints) and 2017 (43 complaints).
What gas mileage does the 2020 Mazda CX-9 get?
Official estimates for the 2020 Mazda CX-9 range from 23 to 24 mpg combined. The most efficient version (2.5L 4-cyl, FWD) gets 22 city and 28 highway.
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