There are 3 stored owner reports matching the engine leading-label group for the 2017 Mazda Mazda3 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)I have a 2017 Mazda 3 with exactly 59,454 miles. I was driving my car into work and a warning came on saying coolant temperatures high pull over immediately. I feel my safety was at risk since I was on a highway and my car lost power and would not allow me to accelerate. Loaded the car on a flatbed to bring into a Mazda dealership. I had oil leaking into my coolant. They diagnosed it as a cracked cylinder head or engine block. Only solution I was given was to replace the engine with a factory new engine. I spoke to Mazda customer service and they admitted it is a known issue.
ENGINE STALLS WHEN IN MOTION ON HIGHWAY. SAME AS OTHER MODELS ON NHTSA WEBSITE.
ENGINE STALLS; STOPS RUNNING. LOSES TOTAL POWER WHILE DRIVING ON A HIGHWAY. THIS HAS HAPPENED AT LEAST 4 TIMES, BUT MOST LIKELY MORE. MY MAZDA COMPUTER SHOULD HAVE RECORDED THESE INCIDENTS.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.