Complaint volume
442 consumer-submitted complaints are matched to this model year. Treat the count as a research signal, then read the actual summaries for repeated symptoms.
Complaint records
2021 Toyota Highlander Complaints
442 consumer-submitted complaints on record for the 2021 Toyota Highlander, grouped by component category.
442 Total complaints
16 Crash reports
3 Fire reports
11 Injury reports
Complaint data reflects consumer-submitted reports. A complaint is not proof
of a defect, recall, or manufacturer fault. Enriched severity fields come
from official bulk records when the complaint can be matched by ODI number.
Buyer interpretation
How to use these complaints before buying
Complaint records are most useful when they turn into inspection points, seller questions, and comparison checks against nearby model years.
Pattern to inspect
The most common categories are power train, service brakes, unknown or other. Use those categories as a test-drive checklist instead of judging the vehicle from the total count alone.
Severity flags
Enriched records include 16 crash reports, 3 fire reports, 11 injury reports, and 0 fatality reports. These fields come from complaint records and should be read in context.
Mileage clue
Mileage is available on 38 complaints, with an average reported failure mileage of 26,599 miles. Compare that with the mileage on the listing.
Questions to ask the seller
- Have you had any problems related to power train, service brakes, unknown or other?
- Can I see recent maintenance and repair records?
- Has the vehicle ever been towed, involved in a crash, or repaired for the same issue twice?
- Can we also check the recall record for this 2021 Toyota Highlander?
Used-car checklist
Use these complaints before the test drive.
Build a buyer checklist to turn these issues into questions and inspection points.
2021 Toyota Highlander
Build buyer checklist Compare with other years Sends year, make, and model to pre-fill your checklist.
How severe are the 2021 Toyota Highlander complaints?
16 Crash
3 Fire
11 Injury
0 Fatality
9 Towed
8 Medical attention
What are the most common 2021 Toyota Highlander complaint categories?
POWER TRAIN 146
SERVICE BRAKES 41
UNKNOWN OR OTHER 34
STRUCTURE 33
AIR BAGS 28
FUEL/PROPULSION SYSTEM 22
ENGINE 13
TIRES 8
POWER TRAIN,ENGINE 7
VISIBILITY/WIPER 7
442 total complaints on record
Latest complaints
| Date | Component | Summary | Severity | Mileage |
|---|---|---|---|---|
| Apr 2026 | POWER TRAIN,ENGINE | Transmission has failed as have many others of the same year make and model without acknowledgement of a manufacturer defect | Crash: No Fire: No | Unknown |
| Apr 2026 | POWER TRAIN | Transmission Failure. Had to have it replaced. | Crash: No Fire: No | Unknown |
| Apr 2026 | STRUCTURE | Rear lift gate doesn't fully open or close sometimes. I have to manually assist in opening or closing after trying the key fob, inside push button and rear switch above the license plate. I have attempted to reset the height adjustment thinking it would fix it, with no success. I have made sure that the gasket is in place, lubricated the struts and tried opening a closing with the car running and again without success. I'm asking this be investigated due to my concern that this is going to be a safety issue if it doesn't open after an accident, to exit the vehicle if needed. Thank you. | Crash: No Fire: No | Unknown |
| Apr 2026 | POWER TRAIN,ELECTRICAL SYSTEM,ENGINE | The vehicle experienced a transmission failure at approximately 62,000 miles, which required a transmission replacement. Toyota replaced the transmission with a rebuilt transmission. Immediately after the repair, the vehicle began experiencing multiple issues that were not present prior to the repair. The vehicle initially would not reverse, and the battery was drained shortly after the repair was completed. Following the repair, the vehicle has continued to experience ongoing electrical malfunctions, including dashboard warning lights, system alerts, and dash lights flashing during remote start. The vehicle has also developed a rattling noise underneath the vehicle. The exact failed component has not been clearly identified. The dealership has provided changing diagnoses and has not provided written diagnostic documentation despite requests. The vehicle has been inspected by the dealership multiple times; however, the issues have not been resolved. During a recent diagnostic, the dealership stated that the catalytic converter is now the issue, but this does not address the ongoing electrical problems. These issues raise safety concerns due to unpredictable vehicle behavior and potential failure of critical systems while driving. Warning lights and system errors began appearing after the transmission repair and have continued since that time. The vehicle is available for inspection upon request. | Crash: No Fire: No | Unknown |
| Apr 2026 | ENGINE | When accelerating at all, the engine emits a whining noise. The only time the whine stops is when the foot is removed from the pedal. It does not whine at idle. I believe it is the transmission going bad. The problem has been confirmed by a local service center. No warning lamps or messages have appeared. | Crash: No Fire: No | Unknown |
| Apr 2026 | POWER TRAIN | A whining noise was observed at around 78k miles. Brought to the dealer and they indicated parts in the transmission are failing and it requires replacement. They said this has been happening more frequently on 2021 Highlanders (also see T-SB-0008-21). It's also a well-documented issue online. My contact with Toyota was that they did not intend to cover any repairs as the vehicle is out of warranty, even though it's not an isolated issue. They would not disclose how many vehicles have reported this issue. I believe it has reached safety recall-level. | Crash: No Fire: No | Unknown |
| Apr 2026 | POWER TRAIN | The contact owns a 2021 Toyota Highlander. The contact stated that the vehicle experienced transmission failure while driving. There was an abnormal whining sound coming from the vehicle while accelerating, and the sound increased in volume while driving. There was no warning light illuminated. The vehicle was taken to the local dealer, where it was diagnosed with an internal transmission failure. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 55,803. | Crash: No Fire: No | 55,803 |
| Mar 2026 | STEERING,ELECTRICAL SYSTEM,BACK OVER PREVENTION | The vehicle experiences intermittent power steering malfunction while driving. Warning messages including “Power Steering Malfunction” and “Low Voltage Abnormality” appear, and the steering wheel becomes stiff and difficult to turn. This has occurred multiple times during normal driving conditions, including at low speeds and while turning. When the issue occurs, it requires increased effort to steer, creating a risk of loss of control. Additional warning messages have included AWD malfunction, pre-collision system malfunction, and lane tracing assist malfunction. These alerts appear simultaneously with the steering issue. The problem began shortly after purchase and has continued intermittently. The vehicle has been inspected, but the issue has not been resolved. This condition creates a safety risk, especially when driving with passengers. | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | Transmission has started to whine, my understanding is this is common for the transmission I have. I have had this verified by 2 different garages. There are no engine lights showing. The noise started around 90K. | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | My 2021 Toyota Highlander was my first car I purchased that I saved up for and has had a sudden issue accrue with a winning sound out of now where. I took it to the dealer ship and they told me I need a new transmission. My vechile only has 73k miles and I noticed this sound is getting worst and worst. I don’t know what to do so I turned to the internet and I was blow away to see how many people have this same issue with the same year and it’s been happing to so many people. I am a father of a special needs child and I sport my family on my own I can not afford to replace this and they won’t do anything for me. I beg anyone that reads this to please help us out cause this is not fair they we pay our hard earned money to get hit with this unexpected issues that they obviously know about but want do anything cause it will ruin there rep. | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | Upon inspection at my local Toyota dealership, the UA80F 8-speed transmission on my 2021 Toyota Highlander has a known whining noise attributed to a failed transmission pump. The whining noise occurs when the car accelerates from 0 to around 50 miles per hour. When it gets to highway speeds, there is no noise. Anyone in the car can be put at risk if the transmission stops functioning on the roadways, and we're left stranded or we're suddenly blocking traffic. This issue is a known issue according to T-SB-0008-21, and there are many people online who seemed to have encountered this issue even beyond the warranty limits of 5 years/60,000 miles. Even my local AAMCO tells me that this is a dreaded and known issue of past customers. This issue first appeared around the 60,000 miles of distance traveled. There is no warning for this problem. You just have to be fortunate enough to discover the noise before the warranty deadlines. I discovered the noise at around 58,000 miles around June 2025, but I didn't know it was an issue back then. Had I known about this, I would've still qualified for the warranty. This noise has been reproduced and confirmed by my local Toyota dealership, and they're quoting me $11,506.53 to fix this issue. Other 3rd party transmission shops are quoting me ~$6,000. I'm frankly frustrated that Toyota did not issue a recall for this known issue that I did not cause. I wanted to drive this car for life, but I'm unsure what to do now. Either pay an exorbitant amount of money or sell it. | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | Transmission failure @110,000miles and a $9000.00 replacement cost. Service advisor at Toyota Dealership indicated they have seen other similar failures on this Highlander Platinum Model at their dealership but unit is out of warranty by a few thousand miles | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | My 2021 Toyota Highlander is experiencing a transmission issue causing a high pitched whining. It has the problematic UA80F. Toyota has declined to remedy the problem even with it being a known issue. | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | 2021 Toyota Highlander xse all-wheel drive model. Transmission failure: unusual sounds started just after 60,000 miles. Transmission began to whine mid-70,000 miles. Repair costs $8,000. Transmission business recommends rebuilding the Transmissions due to poor design and known issues. | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | During acceleration above 25 mph a noticeable whining sound is heard from the transmission. When not acceleration the sound goes away. The vehicle only has 72300 miles | Crash: No Fire: No | Unknown |
| Mar 2026 | SERVICE BRAKES | When slowing down to stop and the brake is depressed, multiple occasions where the brakes don’t catch. The car jerks forward and I am unable to engage the brakes. I have ended up in the middle of an intersection due to this. It happens frequently, and Toyota continues to brush me off. | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | The transmission began making a wheezing sound. The dealership looked at the vehicle and determined it needed a new transmission. This is a known problem. Toyota issued a service bulletin on the issue in February 2021. I purchased the vehicle a few months after that. T-SB-0008-21 | Crash: No Fire: No | Unknown |
| Mar 2026 | TIRES | The contact owns a 2021 Toyota Highlander equipped with Bridgestone Tires, Tire Line: Alenza Sport, Tire Size: 255/50/R20, DOT Number: 276100C2R. The contact stated the vehicle was inspected by the dealer, where it was discovered that all four tires were prematurely worn quickly and showed defects. The tires were replaced under NHTSA Campaign Number: 24V452000 (Tires). The dealer informed the contact that the issue was related to the previous recall. The manufacturer was not notified of the failure. The vehicle failure mileage was 80,000. The tire failure mileage was 7,000. | Crash: No Fire: No | 80,000 |
| Mar 2026 | FUEL/PROPULSION SYSTEM | *Component/System:** The **Fuel Pump / Fuel Delivery System** failed. The vehicle and the replaced spark plugs/coils are available for inspection upon request. **Safety Risk:** The vehicle **stalls abruptly while in motion (at speed)**, causing an immediate loss of motive power in traffic. This creates an extreme risk of rear-end collisions and leaves the driver stranded in active lanes of travel. The vehicle must be shifted to park, turned off, and restarted to temporarily "reset" the system, which is life-threatening in high-speed or heavy-traffic environments. **Confirmation/Reproduction:** The problem has been confirmed by an **independent service center**. Initial diagnostic codes led to the replacement of spark plugs and ignition coils; however, the stalling persisted. Subsequent diagnostic testing specifically identified the fuel pump as the point of failure, consistent with symptoms of known Toyota fuel pump recalls. **Inspections:** The vehicle has been inspected by an **independent mechanic**. It has not yet been inspected by Toyota corporate, the police, or insurance representatives, as no crash has occurred yet—though the risk is imminent. **Warning Symptoms:** The Check Engine light illuminated on January 21, February 21, Febuary 26, March 6 and March 10. Prior to the first total stall, the vehicle exhibited brief hesitations during acceleration. There were no specific "Fuel Pump" warnings on the dashboard; the vehicle simply loses power without a countdown or secondary safety mode (Limp Mode). | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | My vehicle is experiencing a transmission safety issue that has been diagnosed by the authorized Toyota dealer service center (Toyota of Scranton). During my most recent service visit on 3/2/26, the dealer reported that the transmission is “failing and whining” and recommended full transmission replacement. This condition creates unsafe driving behavior, including abnormal whining noise during acceleration and the concern for sudden transmission failure while driving. The Highlander started exhibiting issues with the transmission within the past 7 days. This issue appears consistent with the known transmission defect referenced in Toyota Technical Service Bulletin T‑SB‑0008‑21, which addresses whining and grinding noises caused by internal transmission component failure in 2021 model‑year vehicles equipped with UA80-series transmissions. Multiple independent reports indicate that this condition can worsen and may lead to loss of power or drivability while the vehicle is in motion. For safety reasons, I am submitting this complaint so the issue can be evaluated as part of any ongoing or future defect investigations. I am concerned about the potential risk of transmission failure while driving, which could increase the chance of a crash. | Crash: No Fire: No | Unknown |
| Mar 2026 | FUEL/PROPULSION SYSTEM | While driving westbound on I-8 at approximately 70 MPH in the left lane, a warning message suddenly appeared on my dashboard stating that a malfunction in the hybrid system had been detected. Immediately after the alert, the vehicle lost power and stopped accelerating. I was forced to quickly maneuver across multiple lanes of traffic and barely made it to the narrow right shoulder. Because I had been traveling in the left lane at highway speed, the situation was extremely dangerous, and I was fortunate not to be rear-ended. The vehicle was undrivable and had to be towed to a mechanic. Upon inspection, the cause was identified as a faulty fuel pump, which triggered the hybrid system malfunction and sudden loss of power. The vehicle has only 44,000 miles, making this premature failure especially concerning. Toyota currently has possession of the vehicle but is refusing to cover the repair. Notably, there was a recall issued for fuel pump failures causing similar issues in 2020 model-year vehicles. Given the identical nature of the failure, I believe this indicates an ongoing fuel pump defect that has not been fully resolved. | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN,ENGINE | The contact owns a 2021 Toyota Highlander. The contact stated that while driving at an undisclosed speed, there was a whining sound coming from the vehicle. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with transmission failure. The dealer stated that the transmission needed to be replaced. The vehicle was repaired. After the vehicle was parked and turned off, there was transmission fluid leaking from the vehicle. There was no warning light illuminated. The vehicle was taken back to the dealer, where it was diagnosed and determined that the head gasket had failed and needed to be replaced. The vehicle was repaired. The contact then noticed fluid leaking from the transfer case while the vehicle was parked and turned off. The vehicle was taken back to the dealer, where it was diagnosed and determined that the transfer case had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 74,700. | Crash: No Fire: No | 74,700 |
| Mar 2026 | ELECTRICAL SYSTEM,STRUCTURE | Both of the front door lock actuators went out, so the vehicle won’t lock at all & I can’t use my Toyota app that I pay for. The left back door/hatch rail that lifts up the door is making a loud sound upon opening & getting stuck when opening. Have to push the open button several times or open it manually to get it to open at all. Have taken it to the Toyota dealer to inspect both & both are costly to repair. Can’t find either of the parts anywhere, so I’m guessing a lot of others are having these issues as well. | Crash: No Fire: No | Unknown |
| Feb 2026 | POWER TRAIN | At around 70,000 mi the transmission started making noises and at the 80,000 mile marker I took it in for its maintenance they found debris in the transmission fluid and I was just told it's either a replace it now or replace it when it falls out of the vehicle. A vehicle with less than 100,000 mi and I am the only owner, for the transmission to go out or start going out and Toyota not solve problems is ridiculous | Crash: No Fire: No | Unknown |
| Feb 2026 | STRUCTURE,UNKNOWN OR OTHER | I bought this vehicle used on 04/23/2024 with 18,596 miles on the odometer. When I was inspecting the vehicle prior to delivery at the dealership, I noticed a crack low on the windshield. The dealership replace the windshield prior to my taking delivery of the vehicle. In the spring of 2025 I had a crack develop in the windshield and had to have it replaced. Another crack has since developed (it is now 2/25/26), and I will, once again, have to have the windshield replaced. I have not driven on any freeways recently, so no high-speed travel. I have been driving for over 40 years and have never had this frequency of windshield failures. I have become aware that this issue is discussed by numerous newer model year (2021, 2022, 2023, etc) Toyota Highlander owners. Some have replaced their windshield multiple times like me. It would appear that there may be an issue in the design/aerodynamics of the front/windshield or a defect in the structure of the body that supports the windshield, that leads to this increased frailty of the windshield. I would very much like to see the NHTSA look into this issue and to force Toyota to look carefully at the high number of windshield failure incidents in these vehicles. | Crash: No Fire: No | Unknown |