IllustrationFaulty engine coolant thermostat causing cooler than normal range engine. Engine light code P0126
2020 Mazda CX-5
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2020 Mazda CX-5 do not stand out strongly from the model-year median of 133.
About this comparison →How this year compares
Owner complaints by model year
Compare all CX-5 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 23 of 106 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 30 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 17 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 13 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
9 crash reports0 fire reports6 injury reports
Engine complaints
17 reportsThe contact owns a 2020 Mazda CX-5. The contact stated that while the brake pedal was depressed stopped at a light, he noticed that the vehicle moved forward and the RPM was fluctuating from 600-1,000. No warning light was illuminated. The vehicle was taken to the dealer where the failure was duplicated; however, the vehicle was…
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The contact owns a 2020 Mazda CX-5. The contact stated that while the brake pedal was depressed stopped at a light, he noticed that the vehicle moved forward and the RPM was fluctuating from 600-1,000. No warning light was illuminated. The vehicle was taken to the dealer where the failure was duplicated; however, the vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 9,000.
For some reason this vehicle will make a whoop sound after driving it for a little then idle, either at a stop light or sitting in a parking lot. The first time we heard it we thought that there was a police vehicle in the area. We took it to Mazda dealership, and they didn't what why it was making that sound. The vehicle has le…
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For some reason this vehicle will make a whoop sound after driving it for a little then idle, either at a stop light or sitting in a parking lot. The first time we heard it we thought that there was a police vehicle in the area. We took it to Mazda dealership, and they didn't what why it was making that sound. The vehicle has less than 25K miles. We are not sure if it could be a big safety issue or not but would like Mazda to look into this. There are no warning lights or signs to know when it's coming. The Mazda dealership in our area has no clue and it is annoying hearing this whoop sound.
At mileage of 24,993 and on April 24, 2022 my oil light came on, creating a very unsafe situation for myself and my young son, nearly stranding us on a very isolated road after dark. My vehicle has regular maintenance at the dealer and was not due for an oil change until 25,378 miles or June 13, 2022. About 30 miles prior to th…
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At mileage of 24,993 and on April 24, 2022 my oil light came on, creating a very unsafe situation for myself and my young son, nearly stranding us on a very isolated road after dark. My vehicle has regular maintenance at the dealer and was not due for an oil change until 25,378 miles or June 13, 2022. About 30 miles prior to the engine oil light coming on, my car indicated that an Oil Change was due (prematurely). I added oil to be able to drive it to the dealer who has not verified any issues.
Currently own a 2020 Mazda CX 5 Touring, after coming from work I parked in my driveway and proceeded to turn off the car. When i was walking away i could hear the engine still Running. I went back and turned on the car and turned it back off, again i could still hear the engine still running. I went back and got inside and took…
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Currently own a 2020 Mazda CX 5 Touring, after coming from work I parked in my driveway and proceeded to turn off the car. When i was walking away i could hear the engine still Running. I went back and turned on the car and turned it back off, again i could still hear the engine still running. I went back and got inside and took the car for a 5 minute drive, then came back to my drive way and placed the car on park and then proceeded to turn off the car. I got out and went to the front of the vehicle to see if the engine was running, this time the engine did turn off.
I HAVE BEEN WARNED BY OTHER DRIVERS AT NIGHT THAT MY TAIL LIGHTS WERE OUT. MY CLOCK AND RADIO BOTH ARE MALFUNCTIONING. I JUST TOOK THE CAR FOR THE YEARLY INSPECTION AND THERE IS A MAJOR OIL LEAK FROM A GASKET. THE CAR ONLY HAS 16,000 MILES ON IT!
MASSIVE OIL LEAK NEAR THE ENGINE AND THE CYLINDER HEAD NEEDS TO BE REPLACED BECAUSE IT IS DEFECTIVE. THIS IS A 2020 VEHICLE. THE GASKET KIT AND THE ENGINE ARE ON BACKORDER SO MY CAR IS AT THE SHOP FOR AN UNDETERMINED AMOUNT OF TIME ON THE ORDER OF POTENTIALLY SEVERAL MONTHS!
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.