Toyota Highlander Complaints (2021)

497 consumer complaints on file.

#11751494July 20, 2026
POWER TRAIN
The contact owns a 2021 Toyota Highlander. The contact stated that the vehicle was taken for oil filter maintenance and a spark plug change, and after the maintenance, the vehicle made an abnormal sound each time while accelerating. The dealer was contacted and diagnosed the vehicle with transmission failure. The vehicle was not yet repaired. The manufacturer was contacted and stated that the vehicle was out of warranty. The failure mileage was approximately 59,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11751011July 17, 2026
POWER TRAIN
I bought the vehicle used from a Cadillac dealer in Orlando with 72700 miles on it. At approximately 75000 miles my wife and I noticed a faint whine coming from somewhere. As it worsened, I researched the issue to find that Toyota has a TSB for a manufacturing defect in the transmission. As I understand it, the transmission can fail suddenly causing a serious safety concern. I need to fix this problem as soon as possible for my family’s safety but since I am out of the warrantee period and there are class action law suits in progress I am starting here. The cost of the repair, I am told will be $9000 a $11000. There should be a safety recall for this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11750009July 13, 2026
POWER TRAIN
My 2021 Toyota Highlander Platinum is experiencing a transmission issue consistent with a known problem affecting the UA80 eight-speed transmission used in 2020–2024 Highlander models. The vehicle is currently at Greentree Toyota in [XXX] for diagnosis. This failure is occurring at 63,913 miles, only about 3,900 miles past the vehicle's 60,000-mile powertrain warranty. I have opened a case with Toyota (Case #XXX) and am requesting this be documented as part of a broader pattern reported by other 2020–2024 Highlander owners, including other 2021 Platinum trim owners INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749504July 10, 2026
POWER TRAIN
Our Transmission is failing on our 2021 Highlander. It has a little over 76,000 miles on the vehicle. 2021 and 2022 seem to have many issues with the transmission failing. The dealership's estimate is almost $11,000! We only buy Toyotas and never had this issue with our Sequoia, sienna, avalon, Rav 4 with lots of miles and never needed a new transmission!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749339July 9, 2026
POWER TRAIN
A known issue with this transmission. It started whining and had to be replaced at around 40,000 miles. Was replaced with a rebuilt transmission instead of a new one.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749252July 9, 2026
POWER TRAIN
The Automatic transmission is making a whining noise when you press the accelerator. I took it to the dealer and they confirmed it needs a new transmission. the vehicle started making noise at 58,000 miles. When I was able to bring it in it had 60,200 miles on it. They would not cover it under warranty because the 5-year portion of the warranty was up a few month prior. I filed for a goodwill replacement with Toyota and they denied me. Dealer estimate for a replacement was over $8,100 dollars. No warning lights, the problem started with a gentle hum or whine much like a bad pulley bearing then got progressively worse.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11748658July 6, 2026
POWER TRAIN
Experiencing high pitched whine noise at approximately 65k miles. Local Toyota dealer test drove vehicle, also noticed high pitched whine, and diagnosed as transmission going bad due to issues noted in T-SB-0008-21. Transmission can fail without warning at any time and leave driver stranded or in dangerous traffic conditions with inability to shift gears correctly to get out of harms way.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11748643July 6, 2026
POWER TRAIN
at 109,000 miles the car started having a whining sound with accelerating. When inspected by the Toyota dealer were told we would need a new transmission. Upon further searching there have been many many reports of transmission failure with the UA80 8 speech automatic transmissions. Toyota is aware of this issue but only a few vehicles have been recalled. It is thought to be a problem with manufacturing.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11747815July 1, 2026
ELECTRICAL SYSTEM, UNKNOWN OR OTHER, STRUCTURE:BODY
The back hatch of the car has issues closing regularly. Nearly half of the time you push the button to shut the back hatch when it is open it will not close and has to be shut manually. Typically, it shuts an inch or two and then beeps at you and when you push the button again nothing happens but beeping. This is an issue because it is very difficult to close. Even as a 6' 200+ lb man who does strength training regularly, shutting the back hatch is difficult to do manually let alone for my much smaller wife. This has let to her having to ask for help from strangers in a parking lot to help close the door which is unsafe, particularly since we have small children. Toyota has acknowledged that this is a known issue and have stated that there is nothing that they can do to fix it. This acknowledgement came when the car was very new and my father was the owner and again just a few months ago when we brought up the issue again with Toyota.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746836June 26, 2026
POWER TRAIN
Vehicle started making a high pitched noise when accelerating at around 98,000mi. I took the vehicle in for the 100,000mi service at 100,854mi and had them also look at this issue. I was told that there was a failure in the front carrier pinion shafts and they recommended replacing the transaxle assembly and rear main seal for $8,354. The vehicle was certified with a 100,000mi power train warranty, but it was just out of warranty. I discovered that there is a class action lawsuit against Toyota for knowingly installing transmissions in 2017 to present vehicles that were known to fail prematurely.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746525June 25, 2026
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, FORWARD COLLISION AVOIDANCE: WARNINGS, LANE DEPARTURE: ASSIST
2021 Toyota Highlander UA80 transmission failed at 100,000 miles. Codes P2808, P0741. Matches Toyota TSB-0160-18 and T-SB-0008-21. Dealer Alexander Toyota and TMS Brand Engagement denied goodwill. TMS rep stated "TSBs don't matter" despite pending class action Pallaya v Toyota, Case 2:25-cv-10458, which cites these TSBs as proof Toyota knew of defect. Toyota refusing to honor documented defect. Transmission slip/loss of power is safety issue. Request investigation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746523June 25, 2026
UNKNOWN OR OTHER
Have been having issues with my 2021 highlander power liftgate strut failure. It will not open at times unless you have to repeat pressing the button. It makes a noise that you know it is definitely not working right. This has been going on for three years and the service department keeps telling me it is working fine for right now...
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746426June 25, 2026
POWER TRAIN
My 2021 Toyota Highlander is experiencing the documented transmission issue impacting vehicles with the UA80E transmission. Our transmission whines and experiences a hesitation or jerks the vehicle. Especially under acceleration. My vehicle was purchased brand new from Toyota. Serviced at a Toyota dealership since purchase.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746320June 24, 2026
POWER TRAIN
Transmission started to whine and act erratically during driving. These effects put safety of those in the vehicle at risk by causing distractions to whomever was driving the vehicle, taking their focus off driving. The vehicle was taken to the dealer who confirmed the transmission needed to be replaced due to an internal failure. They said they were able to quickly diagnose this problem because "they saw it a lot." There were no warning lamps or messages from the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746240June 24, 2026
POWER TRAIN
The transmission is in the whining stage of transmission failure. It has been confirmed by Cumberland Toyota in Cookeville, TN. There were no warning lamps, etc. however Toyota did post a Technical Service Bulletin (TSB) on February 09, 2021 that my vehicle would have transmission issues. My warranty expired the last of April 2026 and I am over the mileage warranty by 800 miles. I recognized the whining on June 21, 2026 and reported to Toyota on June 22, 2026. Toyota knew this transmission was going to fail and most are being reported just outside the 60,000 mile warranty. I have asked for help and assistance from the local dealership as well as corporate, but both have declined to assist.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11746003June 23, 2026
POWER TRAIN
Transmission needed! 76,000 miles and Toyota will not address the issue! We have owned Toyotas for 30 some years! Sienna, Avalon, RAV4, Sequoia, and now the Highlander!!!!! There is a massive issue with the transmission across the board in the 2021 and 2022 Highlander and Toyota will not replace.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745875June 23, 2026
POWER TRAIN
After just passing 100K miles, there is now a whirling noise upon acceleration. After taking to an auto repair shop, they narrowed it down to the transmission and said it was a known problem (referenced T-SB-0008-21) and suggested I take it to the dealership. I took to the dealership where a service manager offered to ride with me to confirm and he confirmed the issue was in fact the known problem noted from the technical service bulletin. The Toyota dealership assistant service manager stated that the noise (which he said was coming from a final drive gear bearing) would continue to get progressively worse and that despite being a known issue, there was no remediation available aside from replacing the transmission completely. He said that he saw no reason that I could not continue to drive the car without complications and without the transmission going completely out for at least a couple more years, but that the noise would get progressively louder until you could no longer tolerate the noise level and would need a new transmission at that point (despite it just beginning last week (or my just noticing it), you can hear it over the the radio when at a low to moderate volume). If this is a "known issue," (ie: a defect that is only in some of the cars per the T-SB-0008-21 notice) this does not seem like a reasonable answer to 'just wait until you can't stand the noise level with acceleration and then completely replace your transmission as there is nothing we can do for you' but it was suggested that I could take it to a body shop that would rebuild transmissions and they may could replace that part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745579June 22, 2026
POWER TRAIN, ENGINE
I own a 2021 Toyota Highlander with approximately 127k miles. The vehicle has developed a noticeable whining/whirring noise during acceleration. The noise appears to originate from the drivetrain/transmission area and has become increasingly noticeable over time. The condition occurs every-time during acceleration and is present under normal driving conditions. I am concerned that this may indicate a transmission or drivetrain-related issue that could affect vehicle reliability and safety. I have found reports from other 2021 Toyota Highlander owners describing similar symptoms involving whining noises during acceleration. The vehicle has been inspected by a Toyota dealership. And is certified through Toyota. The vehicles was bought new from the Toyota dealership and has had all service done through Toyota. I am submitting this complaint so NHTSA can evaluate whether this condition is part of a broader pattern affecting similar vehicles as a defect in the original transmission built in the SUV.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745289June 19, 2026
POWER TRAIN
I own a 2021 Toyota Highlander with approximately 93,000 miles. The vehicle developed transmission symptoms including whining noise. A Toyota dealer diagnosed internal transmission failure and recommended complete transmission replacement at a cost of approximately $9786.31. Toyota declined repair assistance. I am concerned because a transmission failure at this mileage is unexpected and appears similar to other owner complaints involving the 2021 Toyota Highlander transmission.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11744884June 17, 2026
POWER TRAIN
The transmission in my 2021 Toyota Highlander began producing a whining noise during acceleration between approximately 15-50 mph at around 80,000 miles. The noise stops when the accelerator is released and has progressively become louder. The vehicle was inspected by a Toyota dealership. I was informed that the condition is a known issue affecting some Toyota vehicles, but no repair was offered because the vehicle is outside the 5-year/60,000-mile powertrain warranty. There are currently no warning lights or diagnostic trouble codes. I am concerned that the transmission may fail while driving, resulting in loss of power or propulsion and creating a safety risk for myself and other motorists. The vehicle remains available for inspection.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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