There are 2 owner-reported engine complaints for the 2019 Toyota Avalonin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
EXCESSIVE OIL CONSUMPTION - NEW VEHICLE NEWLY PURCHASED 2019 TOYOTA AVALON XLE (6 CYL) HAS EXCESSIVE OIL CONSUMPTION. REQUIRED ADDITION OF 2 QUARTS OF OIL AT 2,000 MILES. NO LEAKS EVIDENT UNDER CAR. AT 3,100 "LOW OIL" LIGHT CAME ON, BUT COULD NOT CHECK BECAUSE DEALER TAPED DIPSTICK TO PREVENT ME FROM CHECKING. DEALER TEARING APART ENGINE.
TOYOTA AVALON HYBRID WITH KEYLESS IGNITION. CAR IS SILENT BUT MAY STAY ON WHEN PARKED IN GARAGE. THERE IS NO WARNING SOUND OR LIGHT IF CAR IS LEFT ON AND CAR IS SILENT, BUT AS BATTERY DRAINS, THE ENGINE MAY COME ON 20 MIN LATER AND GENERATE CARBON MONOXIDE. I AM AN ALERT DRIVER BUT THIS HAS HAPPENED TWICE. MORE THAN 17 TOYOTA OWNERS HAVE DIED OF CARBON MONOXIDE POISONING. THIS IS AN EASY SOFTWARE FIX. TOYOTA SAYS IT WILL FIX IN 2020, BUT THERE IS NO SOFTWARE FIX COMING FOR HYBRIDS ALREADY SOLD.
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