2018 Mazda MAZDA3 Engine cooling Problems
- Complaints
- 2about this part
- Share
- 2%of 110 total for the year
- Median mileage
- 109,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2018 Mazda MAZDA3, 2% of the 110 complaints for this model year. Where a mileage was given, the median is 109,000 miles. 1 recall campaign on record is filed under a similar system.
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 2018 Mazda Mazda3. The contact stated that while driving uphill at 45 MPH, the vehicle sputtered, hesitated to accelerate, and the check engine warning light illuminated. When the contact firmly depressed the accelerator pedal, the engine made a knocking noise, and the vehicle stalled. Diagnostic testing at AutoZone retrieved DTC related to the knock sensor. The vehicle underwent a tune-up, and the knock sensors and ignition coils were replaced; however, the failure persisted. While driving, the vehicle hesitated and failed to exceed 40 MPH. …”
NHTSA complaint #11770853, filed 2026-10, 100,000 miles“The contact owns a 2018 Mazda Mazda3. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the engine. The contact stated while starting the vehicle, the abnormal sound would increase. The contact took the vehicle to an independent mechanic who listened to the engine and ended up removing pistons from the engine. The mechanic discovered there was an abnormal sound in cylinder #3 which caused the mechanic to remove the spark plugs. The contact linked the failure to NHTSA Campaign Number: 17V745000 (Engine and Engine Cooling). …”
NHTSA complaint #11587678, filed 2024-05, 118,000 milesRelated recalls
- 17V745000Nov 21, 2017Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3 vehicles, equipped with an incorrect exhaust valve spring. The incorrect exhaust…Covers: Mazda MAZDA3 2018
Related service bulletins
- 10251387Feb 12, 2024Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as…
- 10248392Dec 5, 2023There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very small coolant leak from the bleed hole. This Service Alert is to inform…
- 10244679Oct 11, 2023If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by…
- 10238663Jun 5, 2023Some vehicles may exhibit oil leakage from the drive belt auto tensioner and rattling noises from the engine compartment. This may be caused by insufficient sealing at the drive…
- 10238695Jun 1, 2023Some customers may complain of a lack of power under heavy load without any warning lights or DTCs. This concern may be due to a loose or detached hood weatherstrip, which can…
- 10237216May 24, 2023If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by…
- 10232304Feb 9, 2023Some customers may experience one or more electrical malfunctions after a vehicle body repair. The newly painted fender stay (2) may be causing a poor front harness (1) ground…
- 10230865Jan 23, 2023When servicing SKYACTIV engine vehicles requiring to replace the Oil Galley Plug and Crush Washer, order the required part numbers below. These parts are not listed in GEPC and…
- 10228648Dec 1, 2022Some vehicles may experience the Check Engine Light ON with DTC P0171 (Fuel Trim too Lean) and possibly DTCs P030X (Misfire). Vehicles having this concern should use the…
- 10208556Feb 23, 2022Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as…
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 2 | 2% |
| 2014 | 1 | 1% |
| 2012 | 4 | 2% |
| 2011 | 2 | 2% |
| 2010 | 9 | 1% |
| 2009 | 1 | 1% |
| 2008 | 10 | 3% |
| 2007 | 8 | 4% |
| 2006 | 17 | 10% |
| 2005 | 19 | 20% |
| 2004 | 17 | 12% |
Other parts of the 2018 Mazda MAZDA3
30 complaintsOther or unknown
26 complaintsBack-over prevention (rear camera)
16 complaintsVisibility (wipers, defrost, mirrors)
16 complaintsEngine
12 complaintsFuel system
11 complaintsBrakes
6 complaintsForward collision avoidance
5 complaintsTransmission and drivetrain
5 complaintsLane departure
4 complaintsSteering
2 complaintsBody and structure
2 complaints
← All problems reported for the 2018 Mazda MAZDA3
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