Complaint volume
299 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
2020 Toyota Highlander Complaints
299 consumer-submitted complaints on record for the 2020 Toyota Highlander, grouped by component category.
299 Total complaints
13 Crash reports
0 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, unknown or other, air bags. Use those categories as a test-drive checklist instead of judging the vehicle from the total count alone.
Severity flags
Enriched records include 13 crash reports, 0 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 57 complaints, with an average reported failure mileage of 38,699 miles. Compare that with the mileage on the listing.
Questions to ask the seller
- Have you had any problems related to power train, unknown or other, air bags?
- 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 2020 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.
2020 Toyota Highlander
Build buyer checklist Compare with other years Sends year, make, and model to pre-fill your checklist.
How severe are the 2020 Toyota Highlander complaints?
13 Crash
0 Fire
11 Injury
0 Fatality
11 Towed
8 Medical attention
What are the most common 2020 Toyota Highlander complaint categories?
POWER TRAIN 112
UNKNOWN OR OTHER 33
AIR BAGS 30
SERVICE BRAKES 27
STRUCTURE 21
FUEL/PROPULSION SYSTEM 16
ELECTRICAL SYSTEM 7
ENGINE 6
SEAT BELTS 6
STRUCTURE:BODY 5
299 total complaints on record
Latest complaints
| Date | Component | Summary | Severity | Mileage |
|---|---|---|---|---|
| Apr 2026 | SERVICE BRAKES,FORWARD COLLISION AVOIDANCE | The Pre-Collision System with Pedestrian Detection is a good thing, but there's a problem. It stops the car too abruptly on the highway, leading to rear-end collisions. When you release the brake pedal, the car remains stationary. To get it moving, you need to press the accelerator pedal. There have been four instances of the Pre-Collision System with Pedestrian Detection being activated in the last 12 months. Two of them ended in rear-end collisions. In the other two cases, there were no cars behind. | Crash: Yes Fire: No | Unknown |
| Apr 2026 | POWER TRAIN | Transmission developed a "whine" just before 87,000 miles resulting in the transmission and torque converter needing to be replaced as the transmission was failing. | Crash: No Fire: No | Unknown |
| Apr 2026 | POWER TRAIN | I have a 2020 Toyota Highlander Limited, at 140k my car began whining with acceleration, I took it to the dealership and a new transmission and was quoted 9,790 alone for a new transmission. I have had Toyotas since I began driving, I have never put more than breaks and battery’s in them. It seems this transmission has been a constant problem and failing early in life. I am not sure how there is not a recall for as many reports that there is. | Crash: No Fire: No | Unknown |
| Apr 2026 | AIR BAGS | The contact owns a 2022 Toyota Corolla. The contact stated that while driving at an undisclosed speed, a passing vehicle suddenly attempted to merge lanes and struck the vehicle on the passenger side door at approximately 45 MPH. No warning lights were illuminated. The contact stated that the air bags did not deploy. The contact stated that she sustained pain in her right chest, head, and left arm, and medical attention was sought. A police report was filed. The vehicle was towed to a local tow lot, where it remained for further investigation. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 89,083. | Crash: Yes Fire: No Injuries: 1 Towed Medical attention | 89,083 |
| Apr 2026 | UNKNOWN OR OTHER | I was driving on a busy road going 50 mph and my sunroof exploded. Nothing hit my vehicle and It wasn’t a hot or cold day. No one was injured because my sunroof cover was luckily closed. | Crash: No Fire: No | Unknown |
| Apr 2026 | POWER TRAIN | At approximately 75,000 miles the vehicle had a whining noise coming from the engine area. Took it to the dealer and they tested it, listened to it and determined that the transmission needed replaced. They confirmed the t-case oil is in good condition and level. No maintenance issues or concerns. Just that the transmission had gone bad. Toyota wants $8,000 to replace a transmission with low miles for a 2020 vehicle. | Crash: No Fire: No | Unknown |
| Apr 2026 | POWER TRAIN | UA80 8 Speed transmission on 3.5V6 AWD transmission whine with transmission failure | Crash: No Fire: No | Unknown |
| Apr 2026 | VEHICLE SPEED CONTROL,UNKNOWN OR OTHER | The vehicle is a 2020 Toyota Highlander experiencing a transmission system malfunction, specifically involving the automatic transmission and/or torque converter. Component/System Failure: The transmission produces a noticeable whining noise during acceleration and exhibits abnormal shifting behavior, including hesitation and delayed response when pressing the gas pedal. The issue appears to originate from the internal transmission components. The vehicle is available for inspection upon request. Safety Risk: This condition creates a serious safety concern, as the hesitation and delayed acceleration can impair the driver’s ability to safely merge into traffic, cross intersections, or respond to changing road conditions. The unpredictable response increases the risk of a collision, especially in high-speed or congested traffic environments. Reproducibility / Confirmation: The issue is consistently reproducible and occurs whenever the vehicle is accelerated. The problem has not yet been fully resolved and is in the process of being addressed with a dealership/service center. Inspections: The vehicle is scheduled to be inspected by a Toyota dealership. At this time, it has not yet been inspected by the manufacturer, police, or insurance representatives. Warning Signs / Symptoms: There were no warning lights or dashboard messages prior to or during the issue. The first symptom noticed was the whining noise during acceleration, followed by abnormal shifting behavior and hesitation. These symptoms have progressively become more noticeable over time. This issue appears consistent with reported transmission problems in similar model vehicles, raising concern that this may be a broader defect affecting vehicle safety. I took my vehicle to 3 different mechanics and they told me that my vehicle is not safe to drive long term without a total transmission replacement. Thank you! | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | My 2020 Toyota Highlander experiences transmission jerking and hesitation during low speed acceleration. The issue was first reported to the dealership while under warranty but was not diagnosed. The vehicle now requires transmission replacement 7k miles over the warranty despite the issue being reported during the warranty. Toyota has refused a repair under warranty and has violated their terms of powertrain warranty. This 8 speed transmission commonly has issue during production years 2017-2022 and toyota has admitted to a production defect. Despite that they have refused a goodwill repair or a warranty repair. | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | Vehicle produces a noticeable whining noise under acceleration. Shifting is completely normal and no other drivability issues are present. Issue matches the pattern described in TSB T-SB-0008-21 (UA80E/UA80F front carrier assembly pinion shaft bearing failure). Multiple owners report dealers are diagnosing this as requiring full transmission replacement at 8,000–12,000, with no partial repair or recall offered despite Toyota’s prior knowledge of this defect in earlier model years (ZJC Warranty Enhancement Program for 2017–2018). Requesting NHTSA investigation | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | 1. The vehicle’s transmission appears to be failing. I was driving my 2020 Toyota Highlander on the freeway at about 75 mph with my family in the vehicle when the car suddenly lost power and would not accelerate properly even though the engine was still running. Because of the sudden loss of power, I had to carefully move the vehicle to the shoulder of the freeway. At the time I did not realize it may have been related to the transmission. 2.Recently I brought the vehicle to an authorized Toyota dealership for a routine oil change and because I had started hearing a whining noise when accelerating, especially above about 30 mph. After inspecting the vehicle, the dealership informed me that the transmission needs to be replaced and provided a repair estimate of approximately 9,800. The vehicle currently has around 72,000 miles and the transmission is available for inspection upon request. 3.The sudden loss of power on the freeway created a dangerous situation because traffic around us was moving at highway speeds. My family was in the vehicle and I had to maneuver the car to the shoulder while vehicles were passing at high speed, which could have resulted in a serious accident. 4.The issue has been confirmed by the authorized Toyota dealership service department. When the incident occurred and we were stopped on the shoulder of the freeway, we contacted the highway patrol because we were concerned about our safety while stopped on the highway. 5.No warning lights or messages appeared on the dashboard prior to the loss of power. The only symptom noticed before bringing the vehicle in for service was a whining noise during acceleration. | Crash: No Fire: No | Unknown |
| Feb 2026 | POWER TRAIN | Vehicle: 2020 Toyota Highlander XLE Purchased: August 2020 Owner: Original owner Transmission: UA80F Dealer quote for “Transmission assembly remove and replace: $8,666.22 +tax The vehicle is experiencing delayed acceleration (lagging power) and a loud whirring noise from the transmission when the accelerator pedal is pressed. The whirring noise immediately stops when the accelerator pedal is released. The Toyota Highlander had just exceeded the 60,000 mile/5 year powertrain warranty. Vehicle has 68,079 miles and is 5 1/2 years old. The delayed acceleration creates a serious safety hazard, particularly when starting from a complete stop while attempting to make a turn into traffic. On multiple occasions, the vehicle failed to respond promptly when the accelerator was pressed, placing the vehicle at risk of being struck by oncoming traffic. On February 17, 2026, Oakbrook Toyota diagnosed the vehicle with a failed/bad transmission after charging a $200 diagnostic fee to investigate the whirring noise and power delay. This failure occurred on a vehicle that has been properly maintained and has not been modified. Upon searching the Internet, there are many, many complaints regarding the UA80 transmissions failing between 60,000 and 70,000 miles. There are also multiple lawsuits filed for failed transmissions. | Crash: No Fire: No | Unknown |
| Feb 2026 | POWER TRAIN | My 2020 Toyota Highlander, with 83k miles, started making a whining noise when accelerating. I took the vehicle to a local auto shop and they advised there was a transmission issue. There were never any warning signs of issue. I then took the vehicle to Antwerpen Toyota in Clarksville, MD (where the vehicle was purchased) and paid $185 for a diagnostic appointment. On February 20, 2026, The dealership provided a written estimate for “Replace automatic transmission assy” with a total cost of $9,403.77. I am very concerned for the safety of myself and others continuing to drive the vehicle without proper repair. The vehicle is otherwise in great condition and I keep up with all regular maintenance. | Crash: No Fire: No | Unknown |
| Feb 2026 | POWER TRAIN,VEHICLE SPEED CONTROL | At approximately 120,000 miles, the vehicle began exhibiting a pronounced shudder or vibration between 40–50 mph under light acceleration or steady cruising. The condition progressed to delayed shifting and intermittent loss of acceleration response. The most concerning issue is hesitation and reduced acceleration when attempting to merge into traffic or increase speed. On multiple occasions, the vehicle failed to respond promptly to throttle input, creating a potential safety hazard due to loss of propulsion. The vehicle was evaluated at two authorized Toyota dealerships. Both indicated that the condition is consistent with torque converter or transmission failure. Full transmission replacement was recommended at an estimated cost of approximately $9,000. No whining or grinding noises are present; symptoms primarily involve shuddering and hesitation. The vehicle has not been driven since October 21, 2025, due to safety concerns and to prevent further damage. The vehicle has been regularly maintained at Toyota dealerships and has not been used for towing. This complaint concerns loss of acceleration, transmission shudder, and potential premature failure of the 8-speed automatic transmission. | Crash: No Fire: No | Unknown |
| Feb 2026 | AIR BAGS | Taken vehicle at least 6 times to dealer (Corwin Toyota), to enquire about the 23v-865 recall, and each time have been told the repair is not available. Most recently asked December 2025. | Crash: No Fire: No | Unknown |
| Jan 2026 | POWER TRAIN | THE TRANSMISSION FAILED SUDDENLY. | Crash: No Fire: No | Unknown |
| Jan 2026 | UNKNOWN OR OTHER | Premature transmission failure. Vehicle had less than 100K miles. Took the vehicle in for an oil change before a long trip. Mentioned a "whine" during acceleration. Told us that the entire transmission would need to be replaced immediately at a cost of over $10,000. Made an appeal to Toyota to help with the cost of replacement and we were denied. | Crash: No Fire: No | Unknown |
| Jan 2026 | POWER TRAIN | Our 2020 Highlander with 45,000 miles started making a whining noise when accelerating. After the Toyota garage looked at it we were told that we needed a full transmission replacement. No warning lights came on alerting of us of problem. We were also told by the service depart that they are not surprised there hasn’t been a recall due to how many transmissions they have replaced on these vehicles and especially this type of transmission. Upon researching this particular issue, It is a wide known issue with class action lawsuits. New transmissions are also only carrying a 1 year warranty. That is hardly a warranty on a costly repair. It will cost us out of pocket $8,000 for a vehicle that is meticulously maintained and with only 44,000 miles. These vehicles are still being sold putting myself, my family and many more Americans as risk. | Crash: No Fire: No | Unknown |
| Jan 2026 | POWER TRAIN | I have experienced ongoing transmission problems, including but not limited to rough shifting, delayed acceleration, jerking while driving, and abnormal noises. These issues have significantly affected the safety, reliability, and drivability of my vehicle. This transmission failure significantly undermines Toyota’s long-standing reputation for reliability and has substantially reduced the value of my vehicle. | Crash: No Fire: No | Unknown |
| Jan 2026 | BACK OVER PREVENTION | The contact owns a 2020 Toyota Highlander. The contact stated that while reversing, the rear-view camera screen displayed a black screen. The contact stated that the failure was persistent. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was made aware of the failure. The contact referenced an unknown recall with a similar failure; however, the VIN was not associated. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 153,000. | Crash: No Fire: No | 153,000 |
| Jan 2026 | POWER TRAIN | Whine noise when you accelerate coming from the automatic transmission. Car is hesitant in shifting gears when needing to accelerate causing safety issues/concerns while driving due to the inconsistency. Toyota dealer as inspected the vehicle and recommended a transmission replacement. Dealer has filed a claim with Toyota to see if it will be covered or not. Total price of repair quoted from dealer was $8700.00. I am also being told there is a back order on parts related to the repair of the vehicle and that the amount of vehicles with this issue are increasing in numbers each day. I purchased this vehicle new in 2020 and have been the sole owner. | Crash: No Fire: No | Unknown |
| Jan 2026 | POWER TRAIN | Transmission is presenting a high-pitched whining noise. | Crash: No Fire: No | Unknown |
| Jan 2026 | UNKNOWN OR OTHER | The sunroof suddenly exploded while stopped at a stoplight. Luckily I had the interior slide shut otherwise we would have been covered in glass. | Crash: No Fire: No | Unknown |
| Jan 2026 | UNKNOWN OR OTHER | While driving on the highway, our sunroof spontaneously exploded. We heard what sounded like a gunshot and found a giant hole in our sunroof glass. | Crash: No Fire: No | Unknown |
| Dec 2025 | POWER TRAIN | The contact's wife owns a 2020 Toyota Highlander. The contact stated that soon after purchasing a new set of tires, the vehicle made an abnormal rattling sound upon acceleration. The vehicle was taken to a dealer for an oil change and tire rotation, and the contact was informed that no defect was found on the vehicle. As the failure persisted, the vehicle was taken back to the shop, where the tires were purchased. The contact was informed that there was no defect in the tires, and the failure might be related to the differentials of the vehicle. The vehicle was taken back to the dealer, where it was diagnosed with transmission failure. The manufacturer was then notified of the failure, and the contact was offered partial financial assistance towards the purchase of a new engine. The vehicle was not repaired. The failure mileage was approximately 55,000. | Crash: No Fire: No | 55,000 |