There are 4 stored owner reports matching the engine leading-label group for the 2020 Toyota Tundra 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 4 of 4 matching reports.
Open the full vehicle complaint log (all categories)CAR WILL NOT START IN HOT WEATHER (115F+). THIS IS EXTREMELY DANGEROUS. BOTH TIMES I GOT STUCK IN 115-117F WEATHER OUTDOOR. TOYOTA DEALER SAY THEY CAN'T REPLICATE ISSUE AS THERE NEEDS TO BE A 115F+ WEATHER.
WHEN WEATHER GETS WARM (100F+), IT WILL OFTEN TAKE A FEW SECONDS TO START THE CAR. IT CRANKS OVER, BUT WON'T CATCH. WHEN WEATHER GETS TO 110F, IT WOULD FAIL TO START AFTER IT HAS BEEN DRIVEN, THEN PARKED. WAIT 90 MINUTES, AND IT WOULD STARTS AGAIN. THIS IS A SAFETY ISSUE, BECAUSE WHEN WEATHER IS 110F+, IT IS VERY VERY UNCOMFORTABLE WAITING FOR A TOW TRUCK (THEY ARE USUALLY SUPER BUSY ON A HOT DAY) OR WAIT 90 MINUTES PLUS IN 110F+ WEATHER. TOYOTA HAS REFUSED TO FIX IT, AS THEY SAY THEY NEED TO WAIT FOR A 110F+ DAY TO DUPLICATE THE ISSUE,
Air conditioning compressor partially seizes if air conditioning is turned on while driving and when air conditioning knob is on at time engine is started. Makes very loud noise. When driving, and it occurs, truck will slow suddenly as if the brakes were applied until compressor engages. Dealer mechanic says it sounds like the compressor clutch engaging. Said nothing wrong. Have left truck with dealer several times and they say they cannot replicate the issue. I’ve recorded the sound several times and have played that to them. They hear it but say that they have to prove that is what is happening. They refuse to replace the compressor. Vehicle is not safe to drive when this happens. This has occurred since truck was purchased brand new.
TL* THE CONTACT OWNS A 2020 TOYOTA TUNDRA. THE CONTACT STATED WHILE DRIVING AT LOW SPEEDS, HE STARTED TO HEAR AN ABNORMAL NOISE. THE CONTACT STATED NO WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER TOYOTA OF SANTA MARIA (700 EAST BETTERAVIA RD, SANTA MARIA, CA 93454, (805) 928-3881) WHERE THE MECHANIC WAS UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS 8.
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 29, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.