There are 3 stored owner reports matching the powertrain & transmission 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)Transmission is pulling during shifting. Dealer updated Transmission software twice already during warranty. Car is doing it again. This can be a safety problem when pulling in front of traffic and Transmission fails to shift smoothly and it jerks/delays.
WHEN FROM A FULL STOP, THEN WITH WHEN NEEDING TO ACCELERATE QUICKLY, THERE IS A DELAY IN ENGINE RESPONSE. USUALLY HALF A SECOND TO ONE FULL SECOND DELAY IN ENGINE RESPONSE BEFORE IT STARTS TO ACCELERATE. ONE ONE OCCASION, IT DID NOT ACCELERATE AT ALL. I HAD TO THEN LET MY FOOT OFF OF THE GAS PEDAL AND PRESS DOWN ON THE GAS AGAIN FOR IT TO FINALLY ACCELERATE. THIS WAS VERY DANGEROUS FOR EXAMPLE WHEN I WAS ON THE FREEWAY. MY LANE WAS STOP-AND-GO TRAFFIC, BUT THE LANE TO MY RIGHT WAS OPEN, SO I WAITED TILL IT WAS CLEAR THEN TURN THE STEERING WHEEL TO THE RIGHT AND PRESS THE GAS PEDAL. WELL TO MY SURPRISE IT DID NOT ACCELERATE AND CONSISTENTLY MOVED AROUND 5 MPH, WELL THERE WAS A CAR COMING IN THAT LANE AND MY CAR WOULD NOT ACCELERATE SO I LET OFF MY FOOT AND PRESS THE GAS AGAIN AND IT STARTED TO ACCELERATE.
ENGINE SHUT DOWN IN TRAFFIC AND WOULD NOT COME OUT OF DRIVE. MAZDA DEALER SERVICE TOLD ME TO DISCONNECT BATTERY TO RESET SYSTEM. I THINK THIS IS SAFETY ISSUE. PLEASE CONTACT ME WITH ANSWER
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.