IllustrationThe 8 speed Toyota transmission is defective and my transmission started to whine very loudly. I was told that it could freeze/lock up on me at any time so I had a rebuilt transmission put in my car. I am told Toyota new about this defect.
2020 Toyota Highlander
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2020 Toyota Highlander do not stand out strongly from the model-year median of 186.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Highlander years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 58 of 311 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Power Train. Review the 124 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 37 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Air Bags. Review the 32 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
15 crash reports0 fire reports13 injury reports
Power Train complaints
124 reportsMy transmission failed in my 2020 Toyota Highlander after about 75,000 miles. This is a know issue technical service bulletin # T-SB-0008-21. The dealership acknowledged the known issue and instructed me to reach out to Toyota corporate for goodwill assistance which I did. They are reviewing my case but told me that they will…
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My transmission failed in my 2020 Toyota Highlander after about 75,000 miles. This is a know issue technical service bulletin # T-SB-0008-21. The dealership acknowledged the known issue and instructed me to reach out to Toyota corporate for goodwill assistance which I did. They are reviewing my case but told me that they will not replace the transmission even thought its a know issue. It will be $10,000 dollars to repair.
The contact owns a 2020 Toyota Highlander. The contact stated that while driving to the dealer for a service appointment, the vehicle made an abnormally high-pitched sound. The vehicle was diagnosed with a UA80 transmission failure. No further information was available. There was no warning light illuminated. The manufacturer …
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The contact owns a 2020 Toyota Highlander. The contact stated that while driving to the dealer for a service appointment, the vehicle made an abnormally high-pitched sound. The vehicle was diagnosed with a UA80 transmission failure. No further information was available. There was no warning light illuminated. The manufacturer was notified of the failure. The failure mileage was approximately 71,233.
The transmission has been making a whining noise since about 75K miles. Had the transmission fluid changed at about 110K miles. Still makes whining noise and now has a rumble occasionally. We took it to the dealer and they said the transmission needs replaced. Over $8k in charges for the repair.
My 2020 Hylander, which has under 50,000 miles, started to whine with any use of gas pedal/acceleration. None of the warning lights were triggered. My mechanic informed me today it needs a new transmission, and for safety reasons, the car shouldn’t be driven. I’ve been reading how there are known problems with Toyota’s transm…
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My 2020 Hylander, which has under 50,000 miles, started to whine with any use of gas pedal/acceleration. None of the warning lights were triggered. My mechanic informed me today it needs a new transmission, and for safety reasons, the car shouldn’t be driven. I’ve been reading how there are known problems with Toyota’s transmissions for my age car—this is negligence on their part—these cars should be recalled and fixed by Toyota.
I took my car in for service and I noticed my car is making a loud whining noise. I asked the mechanic about it and he said my transmission is going out. I found on the web several people complaining about the 8-speed Toyota transmission and how it will stop working shortly. The complaints are numerous and it listed all the…
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I took my car in for service and I noticed my car is making a loud whining noise. I asked the mechanic about it and he said my transmission is going out. I found on the web several people complaining about the 8-speed Toyota transmission and how it will stop working shortly. The complaints are numerous and it listed all the of the technical bulletins that Toyota issued and they knew about the problem years ago. I am taking my car to shop to have it fixed or replace. Based upon all my research, I am concerned that the car will stop working and leave me in an unsafe situation. I am not happy that Toyota is selling such a defective product.
The vehicle recently began making a whining noise when the gas pedal is pressed that is consistent with premature failure of the transmission. I took it to my local dealership and they recommended replacing the transmission and limiting usage of the vehicle to short trips until that is done because the transmission could fail …
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The vehicle recently began making a whining noise when the gas pedal is pressed that is consistent with premature failure of the transmission. I took it to my local dealership and they recommended replacing the transmission and limiting usage of the vehicle to short trips until that is done because the transmission could fail while driving which would result in loss of power to the wheels which could lead to an accident.
Transmission failing/confirmed by dealer at 70k. No slipping, no warning messages, just whining prompted me to have it inspected. There are multiple lawsuits regarding these UA80 transmissions and Toyota is refusing to fix or acknowledge the manufacturing flaw.
This Toyota Highlander make whining sound when I try to speedup, even a little bit. I had a transmission shop checked, and I was informed there is metal pieces in transmission fluid. I am concerned it will break one day on highway while driving.
The transmission failed. It is available for inspection. Should the transmission have completely failed on the road, it could have lead to an accident. Per the dealership diagnostic: replace transmission and torque converter assembly with applicable seals due to internal transmission failure. It has not been inspected by an…
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The transmission failed. It is available for inspection. Should the transmission have completely failed on the road, it could have lead to an accident. Per the dealership diagnostic: replace transmission and torque converter assembly with applicable seals due to internal transmission failure. It has not been inspected by anyone else. No warning lights. This is a widespread problem in 2017-2020 Toyota Highlanders. Failure frequently happens right after the expiration of the manufacturer warranty and Toyota refuses to pay for it.
Official recalls
423V865000 · Air Bags:sensor:occupant Classification
Dec 20, 2023
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2021 Avalon, Avalon Hybrid, Corolla, Highlander, Highlander Hybrid, RAV4, RAV4 Hybrid, Lexus ES350, Lexus RX350, Lexus RX450H, 2021 Sienna Hybrid, Lexus ES250, 2020-2022 Camry, Camry Hybrid, and ES300H vehicles. A short circuit may develop in the Occupant Classification System (OCS) sensor, preventing the front passenger air bag from deploying.
Consequence & remedy
Consequence: An air bag that does not deploy during a crash increases the risk of injury.
Remedy: Dealers will inspect and replace the sensor as necessary, free of charge. Interim letters notifying owners of the safety risk were mailed in February 2024. Some final remedy owner letters were mailed October 31, 2024. Letters will continue to be mailed in phases through January 2026. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 23TB15/23TA15 Lexus 23LB03/23LA03.
23V720000 · Structure:body:bumpers
Oct 26, 2023
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2023 Highlander & Highlander Hybrid vehicles. During normal vehicle operation, minor impact to the front lower bumper cover may result in the cover coming loose or detaching.
Consequence & remedy
Consequence: A detached front bumper cover can become a road hazard, increasing the risk of a crash.
Remedy: Dealers will repair or replace the upper and lower front bumper covers as necessary, free of charge. Owner letters were mailed April 22, 2024. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 23TB12/23TA12.
20V633000 · Air Bags; Seats
Oct 14, 2020
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020 Highlander and Highlander hybrid vehicles. Incorrect seat trim covers on one or both of the front seats can prevent the seat-mounted side air bag from deploying properly.
Consequence & remedy
Consequence: Improper deployment of the seat-mounted side air bag increases the risk of injury in the event of a crash.
Remedy: Toyota will notify owners, and dealers will inspect the front seats and replace the seat trim covers as necessary, free of charge. The recall began December 11, 2020. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 20TB14 / 20TA14.
Additional source detail variants (2)
Seats
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020 Highlander and Highlander hybrid vehicles. Incorrect seat trim covers on one or both of the front seats can prevent the seat-mounted side air bag from deploying properly.
Consequence: Improper deployment of the seat-mounted side air bag increases the risk of injury in the event of a crash.
Remedy: Toyota will notify owners, and dealers will inspect the front seats and replace the seat trim covers as necessary, free of charge. The recall began December 11, 2020. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 20TB14 / 20TA14.
Air Bags
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020 Highlander and Highlander hybrid vehicles. Incorrect seat trim covers on one or both of the front seats can prevent the seat-mounted side air bag from deploying properly.
Consequence: Improper deployment of the seat-mounted side air bag increases the risk of injury in the event of a crash.
Remedy: Toyota will notify owners, and dealers will inspect the front seats and replace the seat trim covers as necessary, free of charge. The recall began December 11, 2020. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 20TB14 / 20TA14.
20V162000 · Engine; Fuel System, Gasoline:delivery
Mar 19, 2020
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020 Highlander vehicles equipped with a 3.5 L, V6 (2GR-FKS) gasoline engine. Due to an Engine Control Unit (ECU) programming error, fuel may not be correctly supplied to the engine while using the stop and restart feature.
Consequence & remedy
Consequence: Improper fuel supply programming can result in a vehicle stall, increasing the risk of a crash.
Remedy: Toyota will notify owners, and dealers will reprogram the ECU, free of charge. The recall began May 15, 2020. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's number for this recall is 20TA06.
Additional source detail variants (2)
Engine
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020 Highlander vehicles equipped with a 3.5 L, V6 (2GR-FKS) gasoline engine. Due to an Engine Control Unit (ECU) programming error, fuel may not be correctly supplied to the engine while using the stop and restart feature.
Consequence: Improper fuel supply programming can result in a vehicle stall, increasing the risk of a crash.
Remedy: Toyota will notify owners, and dealers will reprogram the ECU, free of charge. The recall began May 15, 2020. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's number for this recall is 20TA06.
Fuel System, Gasoline:delivery
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020 Highlander vehicles equipped with a 3.5 L, V6 (2GR-FKS) gasoline engine. Due to an Engine Control Unit (ECU) programming error, fuel may not be correctly supplied to the engine while using the stop and restart feature.
Consequence: Improper fuel supply programming can result in a vehicle stall, increasing the risk of a crash.
Remedy: Toyota will notify owners, and dealers will reprogram the ECU, free of charge. The recall began May 15, 2020. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's number for this recall is 20TA06.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.