2018 Toyota Sienna owner complaints

1. Even to go on a small uphill slope, the vehicle(v6) really struggles. And when I try to accelerate, it kind of stalls or slows down for a moment, then tries to speed up but its still very slow. I'm facing this issue every day. My other car 2011 camry(v4) is very smooth at the exact same places. Cant believe the pickup is this poor with a new car. 2. On highways, just to maintain the speed over 65 MPH on a recent trip, I had to press real hard on gas the whole time, even after that, I can clearly tell the vehicle was working extra hard just to be over 65. This issue is consistent every time I go on highways. Many owners have reported the above issues at Toyota owners forum: https://www.Toyota.com/owners/community/ask-an-owner/question-details/id/62777282 both issue#1 and 2 mi

I have a question regarding vehicle seat movement. I have been told by two dealerships that the seats in the third row of the Toyota sienna are meant to have some play to them. My main concern is that with a couple of car seats in the third row, or a couple of passengers, the movement of the seats may be an issue. All four seat latches rotate when lifting on the seat by hand, allowing the seat to twist, move to the rear of the vehicle and move laterally. This would be less of a concern if the seats themselves were not the mount for the latch system and seat belts. My question is, what movement is allowed of these seats? In an accident, a huge amount of force can be exerted on these latches, and if they allow play, that force can be multiplied by that movement. The increase in forc

Driver side automatic sliding door won’t stay open , upon opening and reach all the way , it will quickly close. My child safety is a big concern.

3rd row seating passenger side cut holders and side panel get hot after 10 minutes of driving. Took the vehicle to Toyota dealership for diagnosis and was told that the rear heating unit is routed along the 3rd row seating passenger side cut holders and side panel. Since the lines for the rear heating unit is running with coolant at 190f, the heat is transferred to the surrounding area and causing the hot cup holders and side quarter panel. As the vehicle ages, this will definitely become worse. The Toyota dealership informed me that this is the way designed by Toyota; however, this clearly is a design flaw and needs to be remedied.

Car stalled, sputtered and died. At first, I thought I was out of gas. After several tries, the car started and went 3 miles to gas station. After getting gas, the car wouldn’t start several times and that same day the check engine light came on. We took it to Autozone to check the code and they said it was showing fuel pump failure. Today I’m taking it in to the dealer for service. It has started and run twice since the initial episode.

Hi, I’d like to report a serious issue with my 2018 Toyota Sienna related to the recent fuel system recall. Since the repair, the vehicle has leaked all of its gasoline not once, but three separate times. One of those times, my family was inside the vehicle, and the smell of gas was overwhelming. The car wouldn’t start, and it was clearly an unsafe situation. Now the dealership is charging me $1,400 to replace the fuel pressure hose and clamp, which, after thorough research and review, appears to be directly related to the process they followed when replacing the recalled fuel pump. I’ve also tried contacting the service manager, but I haven’t received a call back. That’s why I’m now requesting that Toyota open a formal case to investigate this properly. I believe this repair should be

Power door cable broke,door does not open

The automatic sliding doors do not have an auto/emergency stop if something impedes their shutting. A child can get crushed if an adult is not there to stop the doors. Even though I was there it was very hard for me (an adult) to stop the doors from closing. Yes, the child was wrong for pushing the close button then reaching back in the van to retrieve something. He thought it would stop until he was done. Thankfully I was standing beside him and was able to pull him away but the door still caught my arm and I had to push really hard to stop it. It just happened so fast. The vehicle was stationary, in park, and the ignition was switched off.

Tl* the contact owns a 2018 Toyota sienna. The contact stated that the carpet on the driver side near the accelerator and brake pedals was loose and made contact with the driver's foot while driving. The vehicle was taken to cain Toyota (6527 whipple ave nw, north canton, oh), but the failure was not repaired. The manufacturer was notified of the failure. The failure mileage was 4,700.

The front passenger side bumper snap(s) comes undone, by air flow, as vehicle travels down the road - this causes further tearing of the supporting plastic frame. Local Toyota dealership says this initially was caused by a driver of the vehicle hitting a concrete curb. Note: Bottom of the bumper is only 8 inches from ground surface. The safety issue is: the bumper and its supporting plastic frame will eventually break and fall off vehicle while in transport. I have witnessed this several times on other vehicles (especially on Toyota's). Dealer compounds problem by saying entire bumper has to be replaced at high cost to customer. Customer delays repair (as I have). This causes further damage to the supporting plastic frame. I have gone from one snap to several snaps in duration. I sent Co

My 2018 sienna le is experiencing acceleration problems. I had the software up dated but after approximately 1,000 miles the problem is returning. This problem is especially unsafe when merging onto the highway.

Delay in downshifting when throttle is pressed. A delay of 1 to 2 seconds occurs then abruptly downshifts and the engines revs loudly.

Transmission Whine and Hesitation. Low gear it will hesitate from stop. Know issue with this transmission. There should be a recall on all ua80 transmissions.

This is a reoccurring issue on numerous occasions but the transmission programming is a danger to drivers when it is in economy mode (the default setting when car starts up). The transmission constantly starts at a higher gear (3rd or 4th) and reduces throttle input from a stop. It makes for a slower takeoff when making a right turn on the stop sign because the engine would be lugging. Similarly when trying to overtake or merge lanes and you try to speed up the vehicle, the car does not want to downshift. The above mentioned problems are not there when eco-mode is disabled or the car is put into sport mode.

Tl* the contact owns a 2018 Toyota sienna equipped with four bridgestone turanza tires, size: 235/55/18 (na). The contact stated that the inside shoulder of each tire experienced severe wear. The vehicle was taken to my auto imports Toyota (1860 east sternburg rd, muskegon, mi), but the cause of the failure could not be determined. The tire manufacturer was not notified. The tire and vehicle failure mileage was 30,000.

Original tires at 17k, my 2018 sienna is showing excessive wear on the outside of the front tires. Alignment checked, it is fine.

The contact owns a 2018 Toyota Sienna. The contact stated while driving at an undisclosed speed, the vehicle jerked and lost motive power. In addition, the contact stated that on several occasions the vehicle shut off independently. The vehicle was taken to the dealer; however, the failure could not be duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. In addition, the contact stated that the vehicle was taken to the dealer several times due to the failure. The contact stated that the failure began in 2019 but had become a persistent failure. The contact stated the vehicle was repaired under of an unknown recall and the fuel pump was replaced in 2020; however, the failure reoccurred. The manufacturer was not made aware of the failure. The failu

Light, moderate to too much vibration on the front brake when driving downhill. I was driving downhill and I felt moderate vibration on the front brake. I was so scared that I have to release the brake hoping to stop the vibration. On the way back home, I have to drive another downhill and this time, I felt too much vibration on the front brake when I applied the brake. The vibration was too much that even the hood, I feel like it starts vibrating as well. When driving flat, the vibration will fade away or there is no vibration at all.