There are 5 owner-reported engine complaints for the 2017 Toyota Avalonin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TOYOTA'S FAILURE TO INSTALL AN ENGINE AUTO STOP CAUSED THE CARBON MONOXIDE DEATH OF TWO PEOPLE. FAILURE TO HAVE PROPER OUTSIDE WARNINGS LIKE A HONK TO WARN THE OPERATOR NOT TO REMOVE THE KEY FROM THE CAR LED TO THESE DEATHS. VEHICLE WAS STATIONARY IN A GARAGE. PEOPLE WERE INSIDE THE HOME. HTTPS://WWW.LEGACY.COM/OBITUARIES/HERALDTRIBUNE/OBITUARY.ASPX?N=JAMES-LIVINGSTON&PID=192908732 HTTPS://WWW.LEGACY.COM/OBITUARIES/HERALDTRIBUNE/OBITUARY.ASPX?N=SHERRY-PENNEY&PID=192908731
TOYOTA'S FAILURE TO INSTALL AN ENGINE AUTO STOP CAUSED THE CARBON MONOXIDE DEATH OF TWO PEOPLE. FAILURE TO HAVE PROPER OUTSIDE WARNINGS LIKE A HONK TO WARN THE OPERATOR NOT TO REMOVE THE KEY FROM THE CAR LED TO THIS DEATH.
TOYOTA'S FAILURE TO INSTALL AN AUTO-STOP CAUSED THE CARBON-MONOXIDE POISONING OF TWO (MORE) PEOPLE, MANY DOZENS OF SUCH DEATHS REPORTED. (DETAIL: THEY HAD LIKELY STOPPED THE ENGINE, BUT THE WIRELESS FOB CAN RE-START; AND THIS MODEL HAS AN AUTO STOP/START FUNCTION THAT CAN ALSO LEAD TO DEATH.] NOTE: NOT MY CAR, MY PARENTS.
TOYOTA AVALON FAILS TO HAVE AN IGNITION AUTO SHUT OFF WHICH LED TO DEATH OF TWO INDIVIDUALS. THIS DESIGN FLAW DID NOT PREVENT THE CAR FROM IDLING INDEFINITELY AND FILLING THE HOUSE WITH CARBON MONOXIDE' A TOXIC FATAL GAS. THE CAR DOES NOT HAVE PROPER EXTERNAL WARNINGS LIKE A HONK TO ADVISE A DRIVER THEY MAY HAVE REMOVED THE KEY FROM THE CAR.
TOYOTA'S FAILURE TO INSTALL AN ENGINE AUTO STOP CAUSED THE CARBON MONOXIDE DEATH OF TWO PEOPLE. CAR WAS STATIONARY. FAILURE TO HAVE PROPER OUTSIDE WARNINGS LIKE A HONK TO WARN THE OPERATOR NOT TO REMOVE THE KEY FROM THE CAR LED TO THIS DEATH.
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.
Data synced from NHTSA on Apr 26, 2026