Complaint volume
250 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
2018 Toyota Highlander Complaints
250 consumer-submitted complaints on record for the 2018 Toyota Highlander, grouped by component category.
250 Total complaints
21 Crash reports
1 Fire reports
14 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 21 crash reports, 1 fire report, 14 injury reports, and 0 fatality reports. These fields come from complaint records and should be read in context.
Mileage clue
Mileage is available on 108 complaints, with an average reported failure mileage of 33,340 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 2018 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.
2018 Toyota Highlander
Build buyer checklist Compare with other years Sends year, make, and model to pre-fill your checklist.
How severe are the 2018 Toyota Highlander complaints?
21 Crash
1 Fire
14 Injury
0 Fatality
20 Towed
10 Medical attention
What are the most common 2018 Toyota Highlander complaint categories?
POWER TRAIN 47
SERVICE BRAKES 33
UNKNOWN OR OTHER 22
ENGINE 13
FUEL/PROPULSION SYSTEM 13
FUEL SYSTEM, GASOLINE 11
AIR BAGS 9
ELECTRICAL SYSTEM 9
STRUCTURE 6
SERVICE BRAKES, HYDRAULIC 5
250 total complaints on record
Latest complaints
| Date | Component | Summary | Severity | Mileage |
|---|---|---|---|---|
| May 2026 | POWER TRAIN | Transmission failure (whining noise similar to the well-documented issue with UA80F 8-speed transmissions). I reported the noise and requested a specific diagnosis at approximately 95k miles --- no warning lamps/warnings were visible, just noticeable noise while driving without the radio on. On May 22, 2026, Torrington Toyota confirmed that the transmission was failed, but vehicle is drivable. As I purchased a Toyota Extended warranty, Toyota has approved the order of a remanufactured unit, which is on back order, so repair date is TBD/unknown. I lack confidence in the long-term viability of remanufactured unit, as this UA80F transmission continues to have issues, and will cost me $12k+ after the warranty expires, in the likely case that the remanufactured unit fails. There should be a long-term fix to this expensive issue. | Crash: No Fire: No | Unknown |
| May 2026 | POWER TRAIN | The transmission went on my 2018 Toyota Highlander. The other day as I was driving on highway, lost power as I was driving in neutral. I went from 70mph to 10 or less mph, would not accelerate. All of a sudden all warning lights. Check AWD, check engine light came on, many messages at once. There were no warning lights displayed prior to this. I was able to get off an exit. Could not move the car anymore was not in a safe area, called police for assistance. The car was towed to an independent service center who confirmed it was a transmission issue. | Crash: No Fire: No | Unknown |
| May 2026 | POWER TRAIN | UA80F Transmission failure at 100k miles for the 2018 Toyota highlander SE. No warning lights, engine noise (high pitched whine while driving). Took to the dealer and was told the transmission needed to be replaced. | Crash: No Fire: No | Unknown |
| May 2026 | STEERING,FUEL/PROPULSION SYSTEM | First symptom I noticed was the car smell while it was running. I used a device to see what codes of any would pop up on a scan. It came up with codes tying into the fuel system. I then went to go fill up on gas couple days later and when going to start it back up it wouldn’t start. When it did start it would say engine losing power or steering losing power and then just shut off. I then looked up what that usually means and it made me look towards the alternator. I was told by a mechanic an easy way to see if your alternator was good was to start car and while running disconnect the negative on battery and if it stays running the alternator was still good. So I did that and it stayed running. I then looked up recalls for my vehicle and seen everything it was describing for the fuel system seemed to be happening. I am now filling this form out to get my vehicle looked at and fixed. I have a wife and 2 young daughters that we drive to school. It is not safe to be driving and hoping that us and others on the road will get to there destination safely. | Crash: No Fire: No | Unknown |
| Apr 2026 | AIR BAGS | The contact owned a 2018 Toyota Highlander. The contact stated that while driving at 35 MPH, occupied with her children in the rear passenger seats, the contact was attempting to merge onto the intersection, and a state trooper failed to yield at 55-60 MPH vehicle crashed into the front driver's side of the vehicle, causing the whole front end of the vehicle to detach from the vehicle. The contact stated that no air bags were deployed in her vehicle. The contact stated that she and her children sustained injuries, however under direct legal advice, she cannot disclose this information. Medical attention was required. The contact stated that a police report was filed. The contact mentioned the vehicle was towed to a collision center where it was declared destroyed. The manufacturer was not notified of the failure. The approximate failure mileage was 140,000. | Crash: Yes Fire: No Injuries: 3 Towed Medical attention | 140,000 |
| Apr 2026 | POWER TRAIN | Currently at 113k miles. VIN # is not on the recall or extended warranty list for transmission issues, shift lag has been noticed way before 100k miles. vehicle is making squealing noise on drive, and when gas petal is press. Since no recall, but per research, I may have a faulty transmission that is left out of the Customer support program zjc, t-SB-0160-18. | Crash: No Fire: No | Unknown |
| Apr 2026 | POWER TRAIN | The UA80 8-speed automatic transmission failed catastrophically without any prior warning symptoms while driving on the highway. During normal acceleration to pass another vehicle, the engine revved to 5,000 RPM as the transmission slipped, then dropped to 3,000 RPM coasting. After exiting the highway approximately one mile later and coming to a stop at a red light, the transmission would no longer engage in any forward gear. The engine revs freely when placed in drive and the accelerator is pressed. Reverse still functions. The vehicle had to be towed from the roadside. This created a serious safety hazard. The driver was stranded on the side of a busy road and lost all forward propulsion without warning while operating at highway speed. The failure occurred suddenly with zero prior symptoms. The vehicle was operating normally around town earlier the same day. The driver had no advance warning of any kind, no warning lights, no unusual noises, no shifting irregularities, before the catastrophic highway failure. This is consistent with reports from other UA80 owners who describe sudden, total transmission failure at similar mileage. The loss of forward propulsion at highway speed posed an immediate safety risk to the driver and surrounding traffic. The driver had to navigate to the shoulder and then reverse off the roadway to reach a safe location to wait for a tow truck. I contacted Toyota Customer Experience at 800-331-4331 and was assigned a case number. Goodwill assistance was denied twice. I was told the system would not allow the representative to proceed. I was disconnected twice during attempts to escalate to a supervisor. My case was then closed without resolution. Over 430 NHTSA complaints have been filed regarding UA80 transmission failures across multiple Toyota and Lexus models from 2017-2024. The pattern of failure is well documented. I am requesting NHTSA investigate this transmission platform and the adequacy of Toyota's limited CSP ZJC coverage. | Crash: No Fire: No | Unknown |
| Apr 2026 | POWER TRAIN | I am reporting a documented safety defect in my 2018 Toyota Highlander (VIN: [XXX] ). On March 31, 2026, a certified technician at Groove Toyota (Work Order #XXX) performed a diagnostic inspection to investigate a severe 'airplane whine' noise. The technician verified the noise and used a stethoscope to pinpoint the source as 'very loud coming from final drive,' officially recommending a full transmission replacement at an estimated cost of $8,475. This failure is a direct mechanical match for a known factory assembly error (insufficiently bent locking tab) acknowledged by Toyota in Technical Service Bulletin T-SB-0160-18 and Customer Support Program ZJC. Despite the technician's formal diagnosis that the vehicle is mechanically unsound and requires immediate replacement for safe operation, Toyota Corporate denied my request for assistance (Case #XXX) on April 8, 2026. Toyota cited my vehicle's VIN does not fall into the customer support program, although it's essentially the same transmission, effectively refusing to remedy a documented manufacturing defect. This vehicle has excellent service records, and Toyota’s refusal to honor the spirit of the ZJC program leaves me with a documented safety risk that the manufacturer refuses to address. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | Vehicle makes a whining noise like a siren when accelerating at 40mph or more when you let go of the accelerator the noise stops. I've been told by a mechanic its the transfer case or related transmission component. Toyota should declare a recall since it can cause an accident if the car stops in the middle of the highway. | Crash: No Fire: No | Unknown |
| Mar 2026 | POWER TRAIN | 2018 toyota highlander awd. Whining noise when gas is pressed. Whining stops when gas pedal not engaged. Started at 116000 mileage. Regular service done at dealer. Slippage/ delay in gear shifting (automatic). No light on dash to show there may be an issue. Bought a toyota, because they are supposed to be great cars that run long time. Not real happy to hear that they know they have quality and training issues that can seriously hurt people, and they are not doing anything about it. And “their”consumers have to eat the cost for their mistake. I hope nhtsa files another motion to cover move of the vehicle having the powertrain issue | Crash: No Fire: No | Unknown |
| Feb 2026 | POWER TRAIN | The contact owns a 2018 Toyota Highlander. The contact stated that while driving at an undisclosed speed, the vehicle made grinding sounds while accelerating. Additionally, the vehicle jerked while shifting into gear. The vehicle was taken to the dealer, who determined that the transmission fluid was dirty and that the transmission assembly and torque converter needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 107,700. | Crash: No Fire: No | Unknown |
| Feb 2026 | LATCHES/LOCKS/LINKAGES | I purchase a 2018 Toyota Highlander in 2021. The vehicle had just over 8000 miles when purchased. The vehicle had manufacturers warranty but I purchased additional extended warranty in addition. I can review and find the dates but I don’t have it at the time I’m filling out this form. In any case, there was an issue with the passenger side door lock actuator not properly functioning. The door would not lock when using the key fob. Since the vehicle was under warranty, they replaced the actuator. In February or March of 2025, the passenger side rear door lock began with the same issues. The dealership diagnosed as another door lock actuator. The vehicle was still under warranty so the actuator was replaced. The actuator was ordered but not replaced until after the vehicle extended warranty had expired. Shortly before the second actuator was replaced, the front driver side lock began to give issues. It will not unlock or lock at all. The only way to get the lock engaged is to manually lock the door. In addition, the driver’s side rear door lock has quit functioning as well. I have reported the issue to the dealership but they have claimed they cannot repair since the warranty expired. The tech at the dealership (Rusty Wallace Toyota in Morristown, TN) told me that he has saw this issue in several highlanders. The safety issues is that the locks do not function unless manually engaged. If a child is in the rear seat, the door can be opened. When exiting the vehicle, the doors can be left unlocked inadvertently and unauthorized access can be gained to the vehicle leaving property at risk. I am in the process of getting these two no. Functioning actuators replaced but have been quoted a price in excess of $500 for the parts and labor. I have done some research and it appears this may be an issues on Highlander models 2009-2024. I can provide work orders to the actuators that have been replaced. | Crash: No Fire: No | Unknown |
| Feb 2026 | POWER TRAIN,VEHICLE SPEED CONTROL,UNKNOWN OR OTHER | 2018 Toyota Highlander Platinum started with a whine noise, vibration, and went into limp mode. The transmission has been noted to needing to be replaced. I am currently at 75,453 miles and started to hear the whine at around 65,000 miles. This car is not safe to drive. | Crash: No Fire: No | Unknown |
| Feb 2026 | POWER TRAIN | Transmission whining, hard shifting on 1 and 2 and 3 JP Pauley toyota claim my 2018 Highlander is not part or TBD and neew transmission is required to fix issue quote $7300. to repair current mileage 156K | Crash: No Fire: No | Unknown |
| Feb 2026 | POWER TRAIN | My 2018 Toyota Highlander with 143k miles has poor acceleration shift lag and a whining noise from transmission. Dealer diagnosed and found transmission is failing and in need of replacement. They quoted $9624.00 to replace and the part is on backorder and could take months to get. Toyota customer assistance has declined any assistance with the repair even though they have a extended warranty program and a customer support program for the same year vehicle and with the exact same symptoms offering complete repair coverage regardless of mileage but declined my saying I'm not eligible due to the production date of my vehicle. I feel this vehicle is now unsafe to drive due to the possibility of complete transmission failure possibly at any time on the roadway. | Crash: No Fire: No | Unknown |
| Feb 2026 | POWER TRAIN | Transmission was slipping and hesitating from 50,000 miles up until it went completely out at 96,956. The day it went out, I pulled out onto the highway and there was no acceleration, it wouldn't move. It was flashing "traction control turned off" "check engine visit dealer" "check awd system" and the check engine light was on as well as the orange triangle with explanation point. Toyota said my vin wasn't covered under the TSB, so my extended warranty paid for most, but not all, of the transmisson and parts. They put in a new transmission but the new one does the same thing. It hesitates and slips with currently only 10,000 miles on the new one. | Crash: No Fire: No | Unknown |
| Feb 2026 | VISIBILITY | The contact owns a 2018 Toyota Highlander. The contact stated that while driving at 58 MPH, there was an abnormal popping sound coming from the sunroof, and it was discovered that the sunroof glass had shattered. Neither an independent mechanic nor a dealer was contacted. The vehicle was not taken to the dealer or an independent mechanic to be diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 165,000. | Crash: No Fire: No | 165,000 |
| Feb 2026 | POWER TRAIN | Failed UA80/F Transmission needs replacement for poor manufacturing | Crash: No Fire: No | Unknown |
| Jan 2026 | POWER TRAIN | The contact owns a 2018 Toyota Highlander. The contact stated that while driving at an undisclosed speed, the vehicle was idling roughly with an abnormal sound. The vehicle was driven to the shoulder of the road. No warning lights were illuminated. The vehicle was towed to the dealer where it was diagnosed with transmission failure. The vehicle was not repaired. The contact ordered the parts to repair the transmission but was informed that the parts were not available nationwide. The contact stated that the failure was a known failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 98,340. | Crash: No Fire: No Towed | 98,340 |
| Jan 2026 | STEERING,ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL | The contact owns a 2018 Toyota Highlander. The contact stated that while attempting to turn left or right, the steering wheel became difficult to turn. The check engine warning light illuminated, and the vehicle lost power. The contact waited for several minutes before being able to restart the vehicle. The check engine warning light remained illuminated. The failure had occurred several times and had become more persistent. The vehicle was taken to a certified mechanic, who diagnosed that the body throttle, air control system, and battery sensor had failed. The vehicle was repaired; however, the failures persisted. The manufacturer was not informed of the failure. The approximate failure mileage was 200,000. | Crash: No Fire: No | 200,000 |
| Jan 2026 | POWER TRAIN | The contact owns a 2018 Toyota Highlander. While operating the vehicle, there was a whining sound coming from the engine compartment. The sound was also heard through the dashboard. The vehicle was taken to the local mechanic, who diagnosed that the transmission was faulty and needed to be repaired or replaced. The vehicle was not yet repaired. The local dealer and manufacturer were notified of the failure, but no assistance was offered. The contact was informed of an unknown TSB related to the failure. The failure mileage was 85,000. | Crash: No Fire: No | 85,000 |
| Jan 2026 | POWER TRAIN | Transmission starting making a wining noise, and was told it will fail. Toyota is well aware of this issue. | Crash: No Fire: No | Unknown |
| Jan 2026 | POWER TRAIN | TANSMISSION DIED AT 102,000 MILES, 2,000 MILES OVER THE WARRANTY. Toyota said it will pay $6,000 for parts. I HAVE TO PAY TAX AND LABOR. I have been waiting over a MONTH for the parts, while my HIGHLANDER SITS ON THE Toyota DEALER'S LOT IN RIVERHEAD, NY. My wife took the car there, since the "check engine" light had turned on. After the inspection, We were afraid to take it out of the parking lot. Code P275614 torque converter presure control solenoid; faulty transmission problem. Recommended a new transmision for $11,303 plus tax. Many class action suits are being filed about TRANSMISSION PROBLEMS in HIGHLANDERS! | Crash: No Fire: No | Unknown |
| Jan 2026 | POWER TRAIN | The transmission has started making a whining sound just like the cars/transmissions effected buy the TSB from Toyota related to 8-speed auto transmission failures. My dealer said they have seen a lot of them and mine sounds like it, but they claim I'm not part of the TSB allowing for replacement. Toyota has a real problem with the transmissions in 2018 highlanders but they refuse to fix the problem. | Crash: No Fire: No | Unknown |
| Jan 2026 | POWER TRAIN | Transaxle (Transmission) failure. Whining noise then failed while driving freeway. Towed to dealer/mechanic and confirm failure. There was a whining sound but no engine light warnings prior to complete failure. Toyota put out a TSB for this but was never informed - POL19-04. Toyota needs to expand CSP ZJC coverage to all UA80F/UA80E-equipped vehicles exhibiting symptoms, regardless of VIN range. | Crash: No Fire: No | Unknown |