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Before you buy

2020 Mazda CX-5 inspection checklist

Use this beside the car or give it to a mechanic. These checks come from problems in the records we reviewed. They do not replace a full used-car inspection.

Inspect this CX-5

Mark each check as you go. Your notes stay on this device.

Saved on this device. The shared link never includes a VIN.

Use these notes with a full inspection. A serious warning sign can be enough to walk away.

Required checks

  • Ask the inspector to test the named system and note any warning lights, noises, leaks, or stored codes.

    Electrical System owner reports: 5 reviewed owner reports for this model year mention electrical system.

    Passes when: No matching symptom during inspection

    Looks okay / Concern / Walk away
  • Ask the inspector to test the named system and note any warning lights, noises, leaks, or stored codes.

    Power Train owner reports: 5 reviewed owner reports for this model year mention power train.

    Passes when: No matching symptom during inspection

    Looks okay / Concern / Walk away
  • Ask the inspector to test the named system and note any warning lights, noises, leaks, or stored codes.

    Service Brakes owner reports: 4 reviewed owner reports for this model year mention service brakes.

    Passes when: No matching symptom during inspection

    Looks okay / Concern / Walk away
  • Ask the inspector to test the named system and record the result.

    Manufacturer warranty extension: On certain subject vehicles, the check engine light is illuminated with diagnostic trouble code (DTC) P0126, due to the fail-safe thermostat being stuck open.

    Passes when: No matching symptom during inspection

    Looks okay / Concern / Walk away
  • Ask the inspector to test the named system and record the result.

    Manufacturer warranty extension: Mazda Motor Corporation has decided to conduct a Special Service Program (SSP) to extend the warranty coverage for a specific repair of the fail-safe thermostat installed inside of the suspected coolant control valve on certain 2018-2025 CX-5, 2019-2023 Mazda3, 2019-2022 CX-3, 20

    Passes when: No matching symptom during inspection

    Looks okay / Concern / Walk away
  • Ask the inspector to test the named system and record the result.

    Manufacturer warranty extension: SSPD8 - Check Engine Light ON with DTC P0126:00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for specific repair of

    Passes when: No matching symptom during inspection

    Looks okay / Concern / Walk away
  • Ask the inspector to test the named system and record the result.

    Manufacturer warranty extension: Subject: TSB 01-001/26 Warranty and Parts Kit Update INCLUDES: Warranty Extension Program - Special Service Program (SSP) D8 Check Engine Light ON with DTC P0126:00, 2018-2025 CX-5, 2019-2023 Mazda3, 2019-2022 CX-3, 2018-2021 Mazda6, 2020-2023 CX-30 Dear Mazda Dealer Colleagues,

    Passes when: No matching symptom during inspection

    Looks okay / Concern / Walk away

Ask the seller

  • Has any named issue here ever been diagnosed or repaired on this car?
  • Can I see the maintenance and any recall-remedy records?
  • Will you allow an independent pre-purchase inspection?

Records to request

  • Service and oil-change history
  • Completed recall / campaign paperwork
  • Any dealer diagnostic reports

Why these checks are here

Electrical System owner reports

Owner reports are bound to model year 2020.

Warning signs: 5 reviewed owner reports for this model year mention electrical system.

Good signs: No matching symptom during inspection · Service history addresses the named condition

Power Train owner reports

Owner reports are bound to model year 2020.

Warning signs: 5 reviewed owner reports for this model year mention power train.

Good signs: No matching symptom during inspection · Service history addresses the named condition

Service Brakes owner reports

Owner reports are bound to model year 2020.

Warning signs: 4 reviewed owner reports for this model year mention service brakes.

Good signs: No matching symptom during inspection · Service history addresses the named condition

Manufacturer warranty extension

Official record covers model years 2018 through 2022.

Warning signs: On certain subject vehicles, the check engine light is illuminated with diagnostic trouble code (DTC) P0126, due to the fail-safe thermostat being stuck open.

Good signs: No matching symptom during inspection · Service history addresses the named condition

Manufacturer warranty extension

Official record covers model years 2018 through 2022.

Warning signs: Mazda Motor Corporation has decided to conduct a Special Service Program (SSP) to extend the warranty coverage for a specific repair of the fail-safe thermostat installed inside of the suspected coolant control valve on certain 2018-2025 CX-5, 2019-2023 Mazda3, 2019-2022 CX-3, 20

Good signs: No matching symptom during inspection · Service history addresses the named condition

Manufacturer warranty extension

Official record covers model years 2018 through 2022.

Warning signs: SSPD8 - Check Engine Light ON with DTC P0126:00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for specific repair of

Good signs: No matching symptom during inspection · Service history addresses the named condition

Manufacturer warranty extension

Official record covers model years 2018 through 2022.

Warning signs: Subject: TSB 01-001/26 Warranty and Parts Kit Update INCLUDES: Warranty Extension Program - Special Service Program (SSP) D8 Check Engine Light ON with DTC P0126:00, 2018-2025 CX-5, 2019-2023 Mazda3, 2019-2022 CX-3, 2018-2021 Mazda6, 2020-2023 CX-30 Dear Mazda Dealer Colleagues,

Good signs: No matching symptom during inspection · Service history addresses the named condition

Sources and limits
Source recordEvidence: Limited confidence

The records describe a possible crash, fire, injury, or loss of control.

“MY 2020 MAZDA CX-5 WAS 2 DAYS OLD AND THE BATTERY WAS COMPLETELY DRAINED AND HAD TO BE TOWED TO THE DEALER. I PICKED IT UP AND THEY DID NOTHING TO THE BATTERY. THEY TOLD ME NOTHING WAS WRONG AND THEY REPLACED THE KEY FOB BATTERY. TWO MORE DAYS AFTER THAT I PARKED IT IN MY GARAGE AND PUSHED THE BUTTON TO TURN IT OFF. APPARENTLY IT DID NOT TURN OFF AND COME MORNING, I HAD SIGNIFICANT CARBON MONOXIDE POISONING AND WAS HOSPITALIZED FOR 4 NIGHTS. MY CAR WOULD NOT START AGAIN AND THE ODD THING WAS THAT THE BATTERY WAS DRAINED AGAIN AND THERE WAS STILL GAS IN IT. MY LOCAL MAZDA DEALER REFUSES TO HELP ME AND I AM TRYING TO CONTACT MAZDA'S MAIN NUMBER.”
NHTSAcomplaintNov 2020Open source record
Source recordEvidence: Medium confidence

The records describe a problem worth checking before purchase.

“Started smelling burning oil in 2020 Mazda CX-5 non turbo with 34,000 miles. Auto shop states it is a cracked cylinder that will cost over $7,000 to repair. A Google search shows it is a known issue but Mazda has not extended the warranty for non-turbo models.”
NHTSAcomplaintFeb 2026Open source record
Source recordEvidence: Limited confidence

The records describe a problem worth checking before purchase.

“On Septmber 2, 2023 the car had been on a 4 hour road trip. I came into the driveway, left the car running in Park with the brakes on (listening to music while I cleaned the car out) it was idylling for about 5 minutes. I went to the drivers side door, which was open and reached in to turn the car off using the start/stop button. Before I could turn the car off, it started backing up and the door ran over me. The car was definitely in Park and the Brake was on. There was no reason for the parking brake to disengage.”
NHTSAcomplaintSep 2023Open source record
Source recordEvidence: High confidence

The records describe a problem worth checking before purchase.

“On certain subject vehicles, the check engine light is illuminated with diagnostic trouble code (DTC) P0126, due to the fail-safe thermostat being stuck open. Additionally, you may notice one or more of the following symptoms: -Engine takes longer to warm up. -Engine temperature gauge fluctuates. -Low coolant temperature indicator (blue) light stays on longer or turns on while driving. -Poor heater performance, especially at idle. This warranty extension program applies only to the replacement of fail-safe thermostat of the vehicle exhibiting the concerns mentioned above. If the check engine light illumination is determined to be unrelated to the fail-safe thermostat being stuck open, the inspection and repair are not covered under this program.”
NHTSAtsbNov 2024Open source record
Source recordEvidence: High confidence

The records describe a problem worth checking before purchase.

“Mazda Motor Corporation has decided to conduct a Special Service Program (SSP) to extend the warranty coverage for a specific repair of the fail-safe thermostat installed inside of the suspected coolant control valve on certain 2018-2025 CX-5, 2019-2023 Mazda3, 2019-2022 CX-3, 2018-2021 Mazda6 and 2020-2023 CX-30 vehicles. The warranty coverage for an applicable repair has been extended to 15 years (180 months) /150,000 miles (240,000 km) whichever comes first, from the original warranty start date. If you are a recipient of this notice, your vehicle is included in this warranty extension program. What is the problem? On certain subject vehicles, the check engine light is illuminated with diagnostic trouble code (DTC) P0126, due to the fail-safe thermostat being stuck open. Additionally, you may notice one or more of the following symptoms: -Engine takes longer to warm up. -Engine temperature gauge fluctuates. -Low coolant temperature indicator (blue) light stays on longer or turns on while driving. -Poor heater performance, especially at idle. This warranty extension program applies only to the replacement of fail-safe thermostat of the vehicle exhibiting the concerns mentioned above. If the check engine light illumination is determined to be unrelated to the fail-safe thermostat being stuck open, the inspection and repair are not covered under this program.”
NHTSAtsbDec 2024Open source record
Source recordEvidence: High confidence

The records describe a problem worth checking before purchase.

“SSPD8 - Check Engine Light ON with DTC P0126:00 - WARRANTY EXTENSION For certain 2018-2025MY CX-5, 2019-2023MY Mazda3, 2019-2022MY CX-3, 2018-2021MY Mazda6, 2020-2023MY CX-30 that are equipped with the suspected coolant control valve, the warranty coverage for specific repair of the fail-safe thermostat is extended to: 15 years (180 months) or 150,000 miles (240,000 km) whichever comes first, from the original warranty start date. CONDITION OF CONCERN: On certain subject vehicles, the check engine light is illuminated with DTC P0126:00 (Thermostat stuck open) stored in memory and one or more of the following symptoms may occur: - Engine takes longer to warm up. - Engine temperature gauge fluctuates. - Low coolant temperature indicator (blue) light stays on longer or turns on while driving. - Poor heater performance, especially at idle. Mazda Motor Corporation has made a significant repair change to TSB 01-003/25 which also impacts Warranty Extension Special Service Program (SSPD8). Repair Procedure Update: Effective December 8th all repairs applicable to TSB 01-003/25 or SSPD8 must follow the new repair procedure. The repair now replaces the thermostat with a dummy plug for the coolant control valve (CCV) along with a required software update for the PCM. Prior Repairs: Any repairs previously completed with the replacement of the thermostat or coolant control valve assembly does not require a re-repair unless there is a verified failure following the diagnosis in the TSB. It is expected that there will be no further repairs made for this concern once the plug and software update has been completed. Therefore, a return visit for symptoms related to the TSB or SSP must contact the Technical Hotline for assistance. VITALLY IMPORTANT!: There must be a “Software Update” record for the PCM when using MDARS or IDS. • MDARS - If there is no Software Update entry in MDARS or the Collect Diagnostic Information (ODR Update) is not completed (or both), the vehicle will not be considered repaired and the warranty claim will be rejected. • IDS – Vehicles programed with IDS must Collect Diagnostic Data, and that data must be attached to the warranty claim. If the data is not attached to the claim, the vehicle will not be considered repaired and the warranty claim will be rejected, denied or debited. Failure to complete the above will require the vehicle to return to the dealership and be re-repaired at the dealer’s expense with great inconvenience to the Mazda customer. Failure to perform the software update could also potentially damage the engine which would not be covered by warranty and would expose your dealership to the cost of repairs. ”
NHTSAtsbDec 2025Open source record
Source recordEvidence: High confidence

The records describe a problem worth checking before purchase.

“Subject: TSB 01-001/26 Warranty and Parts Kit Update INCLUDES: Warranty Extension Program - Special Service Program (SSP) D8 Check Engine Light ON with DTC P0126:00, 2018-2025 CX-5, 2019-2023 Mazda3, 2019-2022 CX-3, 2018-2021 Mazda6, 2020-2023 CX-30 Dear Mazda Dealer Colleagues, Mazda Motor Corporation has made a change regarding related parts to TSB 01-001/26 which also impacts Warranty Extension Special Service Program (SSPD8). Parts Ordering and Warranty Claims: Effective March 5, 2026 only the related parts kit PYY2-15-SAY can be ordered and claimed for any repair. The two separate parts PYFB-15-169 and PE13-15-296 can no longer be claimed with repaired dates of March 5, 2026 and later. There is no change to the main part, the Plug PYY3-15-SA1. We have updated the TSB 01-001/26 and SSPD8 Repair Procedure and Parts & Warranty Information on Mazda Global Service Support (MGSS) to reflect this change. ”
NHTSAtsbMar 2026Open source record

The checklist cannot see the car’s full history or condition.

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