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Engine coolingPart report

2021 Mazda CX-5 Engine cooling Problems

Complaints
2about this part
Share
1%of 148 total for the year
Median mileage
30,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the engine cooling of the 2021 Mazda CX-5, 1% of the 148 complaints for this model year. Where a mileage was given, the median is 30,500 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The contact owns a 2021 Mazda CX-5. The contact stated that the vehicle was consuming an excessive amount of engine oil. The contact stated that after driving for 1,000 miles the vehicle needed an oil change. The oil level warning light would be illuminated. The contact stated that after the vehicle was taken to the dealer the contact was informed that the engine was a quart low on engine oil. The manufacturer was made aware of the failure. The approximate failure mileage was 4,000.”

NHTSA complaint #11477544, filed 2022-08, 4,000 miles

“The contact owns a 2021 Mazda CX-5. The contact stated that upon starting the vehicle, the contact became aware that the vehicle was consuming an excessive amount of engine oil. The low oil warning light was illuminated. The vehicle was taken to a dealer to be diagnosed. The contact was made aware that the vehicle was leaking oil. The vehicle was repaired however, the failure had recurred. The manufacturer was made aware of the failure and advised the contact to take the vehicle to the dealer for diagnostic tests. The failure mileage was approximately 57,000.”

NHTSA complaint #11555337, filed 2023-11, 57,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
202323%
202121%
202011%
201941%
201831%
201711%
201610%
201511%
201311%

Other parts of the 2021 Mazda CX-5

Engine
80 complaintsOther or unknown
18 complaintsTransmission and drivetrain
17 complaintsElectrical system
12 complaintsBrakes
11 complaintsForward collision avoidance
11 complaintsFuel system
8 complaintsVehicle speed control
8 complaintsLane departure
7 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsAir bags
5 complaintsTires
3 complaints

← All problems reported for the 2021 Mazda CX-5

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology