2025 Toyota Grand Highlander owner complaints

The contact owns a 2025 Toyota Grand Highlander with an Evenflo Revolve 360 Slim car seat, Model Number: 36812470A, Manufactured Date: December 12, 2022, installed in the vehicle. The contact received notification of NHTSA Campaign Number: 25C010000 (Child Seat). The contact stated that while driving at an undisclosed speed with the child secured in the car seat, the contact became aware that there was an object in the child’s mouth. The contact pulled over to the side of the road and removed a foam piece from the child's mouth. The contact inspected the car seat and became aware that the foam was from the headrest. Medical attention was not needed. The manufacturer was not notified of the failure, but the contact stated that the manufacturer mailed tape to cover the exposed areas of the c

While driving at approximately 50 MPH with no other vehicles around, there was a loud bang and then the sound of air. We identified that the panoramic sunroof had exploded. We pulled over immediately and took photos of the sunroof which at that time was shattered but intact. There was a clear bulge upward and no sign of impact from an outside force. We then continued driving to our home approximately another 40 miles, during that drive shards of glass flew onto the roadway leaving a hole in the sunroof of approximately 10-12 inches. We brought the vehicle to Toyota dealership for a warranty repair. Toyota refuses to cover under warranty, stating outside influence. I am confident there was no outside influence causing the glass to explode. The vehicle is a 2025 Grand Toyota Highland

There is a coolant leak in the hybrid radiator caused by a puncture. When taken to the dealer, they said a rock must have punctured it. The dealer currently has the part. Me, my husband, and 2 children were driving on I-5 when the car stopped accelerating and a "hybrid malfucntion" code and "engine malfunction" code started flashing. Prior to this, there were no warnings. I was thankfully able to full over safely, but we were stuck on the side of I-5 for at least an hour waiting for a tow. I am reading online that this is an issue with the car and seems to be a design flaw. The gaps in the grill are too large, and there is no mesh or anything else behind the grill to protect the front end of the car.

Sun roof shattered unprovoked in 2 month old vehicle while driving slowly in parking lot. We didn't know what happened at first but then opened interior lining and the shattered glass fell into the cabin; nobody was hurt. when we took this to dealership, we were told this wasn't under warrantee and we had to get it fixed independently. I filed a complaint with Toyota Care but they denied covering cost to fix the shattered sun roof. We did not have the shattered sun roof inspected by anybody else but it has been fixed by glass shop.

The vehicle exhibits abnormal fuel system behavior. When the vehicle reaches a low fuel condition (approximately 40–50 miles to empty), the fuel tank only accepts about 12 gallons, even though the listed tank capacity is 17.2 gallons. After refueling, the fuel gauge displays FULL and the “Distance to Empty” reading jumps to over 360 miles, which is inconsistent with the amount of fuel added. A Toyota dealer documented this behavior on a repair order, stating that the tank accepted only 12 gallons from a low fuel condition and immediately displayed a range of 363 miles. A second repair order states that the fuel system was inspected and that the tank supposedly has a “3–5 gallon reserve,” but no technical documentation was provided to support this claim. Toyota’s customer support later prov

Our 2025 Toyota Grand Highlander Platinum repeatedly produces a strong gasoline odor and visibly observable vapor under hot-weather/hot-soak conditions. The condition has been observed by dealership personnel. There is footage from us and the dealership. The manufacturer has characterized the condition as normal, but has not provided a technical explanation identifying the source of the vapor or documentation establishing that visible gasoline vapor is within design/safety specifications. I am reporting this because I am concerned that waiting until an injury, fire, or other serious incident occurs before addressing the condition is inappropriate. I am asking NHTSA to determine whether this represents a safety-related defect or a broader safety issue affecting other Toyota vehicles. I am

I am experiencing a strong gasoline odor & what appear to be gas vapors coming from the gas cap/filler area of my vehicle. A daily problem. Fumes are consistently present & enter the cabin, when the air conditioning is not on recirculation mode or when doors are opened. I can see and smell it when stopped & idling & I can visually see it when driving. Toyota has already performed multiple inspections & safety checks but has been unable to identify the source. A vehicle health check found no diagnostic trouble codes. The EVAP system was pressure tested & passed w/ no leaks found. Fuel lines, fittings, injectors & the high-pressure fuel pump were also inspected & all reportedly passed. The inability to identify the source does not mean the condition does not exist—it demonstrates that the cu

While accelerating from low speeds and turning, the car exhibits a rotational clicking noise from one or both front drive shaft assemblies. Seems to be the identical issue noted in the 2024 Grand Highlander that was presumably fixed during later production lots (T-SB-0082-24). That issue was seemingly solved with driveshaft replacement. The dealer said they “could not duplicate” the issue; however, it happens often while I am driving the vehicle and others have reported it to the same dealer as well. It seems to be an existing related safety issue that the dealer, and potentially the manufacturer, are ignoring until we get past the warranty.

Shortly after powering on the GHHM vehicle, driving a short distance, coming to a stop and depressing the accelerator the vehicle does not accelerate as though no power is getting to the drive train. This does not often happen but has always happened when the EV battery level is 3 bars or less and the vehicle is in its Normal mode (as opposed to Sport or ECO). This acceleration failure event lasts for a few seconds. No warning indicators are displayed prior to, during or after this happens. The dealer checked the vehicle on 30AUG2025, was not able to reproduce, but applied a firmware update TSB-0040-25, which has not solved the problem. Took it back to dealer on 14OCT2025, but the dealer was again not able to reproduce the problem. It poses a safety risk when attempting to cross intersec

Poor acceleration from 0 to 40. Vehicle will start shuttering at a dead stop. The engine has shut off once with this issue. It happened around 4800 miles.

On 9/26 at about 10:15am, my husband and I were fully stopped at a red light with his foot on the brake. Without him touching the gas pedal, the car suddenly surged forward as if it had been accelerated. It stopped for a moment, then surged forward again. Because he was holding the brake, the car didn’t move much, but each surge caused a hard jolt that felt like being rear-ended. No other vehicle hit us.

While driving in neighborhood at around 25 mph car started to sputter and lose power. Started flashing on display regarding ADAS which all disengaged then hybrid system failure message displayed. Stopped car, called dealership and asked if safe to drive. They said it was ok and set appointment for next morning, they contacted Toyota and confirmed it needed a new transmission. Gave me a rental and said car was do not drive. Said transmission backordered under warranty.

Engine temperature overheated during long idle on an out of town event. The vehicle put in park and engine running in idle with AC running. Vehicle coolant temp reach high mark in the red area. Vehicle temp alarm gave a warning to shutdown. I estimated the car idle time 40 min due to traffic accident ahead. The incident occurred on 9/11/26. The car was taken to dealer 9/17/26 for checkup/diagnose the issue. Dealer stated, they could not duplicate the issue. But they did my find the vehicle computer log, the engine registered high temp.

The contact owned a 2025 Toyota Grand Highlander. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with radiator failure. The contact was informed that there was a hole in the radiator. The contact was informed that the radiator needed to be replaced. The vehicle was repaired. The manufacturer was contacted by phone and made aware of the failure. The failure mileage was approximately 15,000.

A piece of road debris/rock struck the radiator/heat exchangers in my 2025 Toyota Grand Highlander Hybrid that immediately damaged the radiator/heat exchangers to result in coolant leakage and sudden loss of propulsion and terminated the engine from moving and required a tow to a Toyota dealer and thus a replacement of the heat exchanger/radiator. It came apparent from their experience that the design of the front-end grill has large, open apertures and no protective screen between the grill and the vehicle’s heat exchangers. Had to file an insurance claim under comprehensive coverage that required me paying a deductible for repairs and NOW stress in future driving experiences.

The contact owns a 2025 Toyota Grand Highlander. The contact stated that while driving 70 MPH, the air conditioner failed to operate. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed and determined that the condenser had failed and needed to be replaced. The dealer informed the contact that the front grille had large open apertures and no protective screen between the grille or the heat exchangers. The vehicle was repaired. The contact stated that the failure was associated with NHTSA Investigation: DP26006 (Engine and Engine Cooling). The manufacturer was made aware of the failure by telephone, and a case was opened. The failure mileage was approximately 15,450.

On 11/02/2025 with the cruise at 55mph all glass closed. Heater on with no vehicles around, the sunroof exploded. It pushed up from the inside. With less than 9k miles on the vehicle. It took my dealer 8 days to look at it then Toyota denied the warranty. Then Quoted me over $2,100 to replace. This vehicle isn't safe to drive as told to me from the dealer.

Driving in city traffic during morning rush hour, sitting at traffic light, when display lights up indicating “Hybrid Malfunction” and “take vehicle to dealer”. Leaving traffic light, the vehicle at first does not move after pressing accelerator, then slowly engages and thugs along. Pull over on closest side street and turn off vehicle, hoping just a fluke. Restart vehicle and drive a few yards. Stop and attempt to resume driving. This time the vehicle does not react at all, neither in drive or reverse. I was able to put in neutral and coast to nearby parking spot so not to block traffic. Had vehicle towed to my hometown Toyota dealer. Upon inspection, they notified me that a small object, probably a rock, had punctured the radiator , that it was not covered under the warranty, and

Inconsistently but on numerous occasions, this vehicle has experienced harsh shifting, hesitation, or jerking during low-speed acceleration (e.g., 20-40 mph) or gear engagement. This was a known and reported issue with the 2024 model for which Toyota provided a fix. They have not provided one for the 2025 models. This issue is a safety risk while driving because with the surge you feel you must quickly let off the pedal, and with the hesitation you let off the brake indicating you will move forward yet the vehicle doesn’t accelerate.

I experienced a serious safety incident involving my 2025 Toyota Grand Highlander with approximately 14,000 miles. While driving on a straight interstate highway at approximately 70 mph, surrounded by other vehicles, the steering wheel suddenly made two to three sharp, forceful jerking movements to the left. Afterward, the steering wheel remained approximately 20 degrees off-center to the left. All lane departure assistance sensors were active during the incident. This unexpected steering behavior created a significant safety hazard. At highway speed, I could have lost control of the vehicle, departed my lane, or collided with surrounding traffic. I was able to reach my destination, but the steering wheel remained crooked. Immediately afterward, I took the vehicle to an authorized Toyota d