I am an automotive engineer. I have been involved with vehicle development programs in the disabled vehicle conversion community for over two decades and have numerous patents in that space. I have been involved with vehicle testing and calibration as well. My vehicle demonstrates a SIGNIFICANT HESITATION when the accelerator is pressed that is not consistent. I live in a roundabout dense location where timing an entry into a roundabout is easy using a normal vehicle. The 1 to 2 second hesitation where there is throttle input and no action at all from the vehicle (engine does not rev, no motive power observed) is very dangerous. I took this up with Toyota and my vehicle was checked out and "learning transmission" memory was wiped clean with me being the only driver was the remedy. The issue got better for a short time but is back and this morning I pulled out thinking there was plenty of time in front of a bus a good distance away and the lack of motive power for a full second or two resulted in a near miss. This vehicle has about 20,000 miles and was purchased by me new. There are NO WARNING LAMPS, and no DTCs thrown when this happens. I have seen several videos where people cite the same experience and a website where there is a class action lawsuit in place regarding this issue. This is completely separate from the engine recall issue. I feel as though this issue is a significant safety risk.

- Carmel, IN, USA

The engine repair was a short block only, even thoe the main bearings spun and sent debis threw the engine. #1 rod went as well. Apon recieving the truck back, with in 200 miles, I've had the same hesitation with the engines as I had just before the first engine failed. Took it by the dealer and no issues found. oil preasure stays up and temp normal. I've had many issue with throtle lag sence day one. The milage has stayed in the low 11 gpm when before i would get on average 14 to 16. Dealer stated toyota would make it right if the engine fails again. Very unhappy with Toyota as I feel they are just kicking the can down the road.

- King George, VA, USA

After a complete stop vehicle acceleration lags when pressing accelerator.

- Dracut, MA, USA

When at a complete stop, going to pull out, or continue driving, there is a noticable lag to the acceleration. It sometimes does nothing for a few seconds before acceleration. If backing up, then switching to drive, .there is a delay and or a small jerk motion before the vehicle accelerates. This has caused issues when pulling out and vehicles are coming at normal speeds with plenty of time to pull out. The delay has almost caused several accidents.

- Troy, OH, USA

When pulling out turning left across a busy street, my vehicle did not accelerate when I pressed the gas pedal for approximately one second. While only a short time, this was enough time to roll into the middle of traffic, but not get out of the way. This throttle hesitation/delay happened twice more in the same trip.

- Salem, MA, USA

The vehicle experiences throttle lag from stop or when rapidly accelerating from one speed to another(passing on highway or merging on interstate). Pushing on the gas pedal does not receive an immediate response from the engine. Issue comes up when accelerating from a stop sign or merging/overtaking.

- Billings, MT, USA

Known issue with these trucks apparently. Occasional throttle lag after stopping at a stop sign, with little response from the gas pedal. On november/december of this month pulling out into a main road with traffic coming, I stepped on the gas and experienced a complete "dead pedal". I stepped on the gas and had 0 response from the truck staying at 5-10 MPH. With cars now coming towards me quickly as I was not moving I floored the gas pedal and had 0 response for another 2-3 seconds until finally the truck jolted at an extreme rate of speed. *Also have a dash cam that recorded in the incident of me flooring it with some vulgar words as cars were coming and the truck was not moving at all.

- Seekonk, MA, USA

My 2024 Tundra has a throttle delay at times. When you go to accelerate quickly there is a second where the throttle cuts out and the truck stalls. This has almost caused me to get in multiple accidents.

- Rockwall, TX, USA

At a stop, there is a delay when accelerating. It almost feels like it is "thinking" before it starts to go. There are no warning lamps. It is unsafe when pulling out of highway because of the uncertainty of when the vehicle feels like its going to go. Some call it turbolag but it feels more than that.

- Greenville, NC, USA

I am experiencing an ongoing issue since the truck was new: the engine hesitates upon acceleration at any speed. When stopped this lag in throttle response makes it difficult to navigate in heavy or unpredictable traffic as the vehicle does not response to the pedal instantly and making intentional sudden speed changes is all but impossible to do safely. Depressing the pedal heavy to try and hasten the response makes the truck surge into hard and fast acceleration, worsening the issue. I have discussed this with the dealer and they said this is -??normal-?? for this truck, and I have heard the same from numerous other 3rd generation Tundra owners. This is a safety issue because I don-??t have adequate control of the vehicle-??s dynamics as the computer is overriding my control of the acceleration, presumably to improve fuel economy. Ultimately this seems to be an intentional design decision by Toyota and puts me and my passengers at risk.

- Fresno, CA, USA

While driving the vehicle there is excessive lag in throttle response when giving the vehicle gas pedal input. Example being when you push gas to accelerate there is a 1-2 second delay from the vehicle before there is movement or acceleration. This happens every time i drive the vehicle and has almost caused numerous accidents due to the inconsistent response to throttle input.

- Plano, TX, USA

Vehicle hesitates to accelerate from stop or slow roll when pedal is engaged. This hesitation nearly caused a collision when attempting a left-hand turn in heavy traffic. Problem can be reproduced easily and is exacerbated when on an incline. It has not been confirmed by dealer or service center. Occurs regardless of whether auto start/stop feature is enabled or not. Putting transmission in "S" mode and manually down shifting to first gear appears to prevent the issue. After the hesitation, when the vehicle begins to accelerate, it performs a "hard" acceleration, like the pedal was slammed to the floor, even though consistent pressure was maintained on the the pedal. Problem has existed since purchasing the vehicle new in Dec. 2023.

- Londonderry, NH, USA

I experience hesitation when applying the throttle from a stop followed by surging. This is incredibly alarming when trying to pull away from a stop sign or light, especially in residential areas with pedestrian traffic.

- Poulsbo, WA, USA

Truck has had several instances where there is throttle lag when accelerating from a standstill and from a rolling stop. Happens more often when making a right hand turn. This is a safety issue when turning at a stop sign or stop light in heavy traffic.

- Senoia, GA, USA

Throttle lag/hesitation. Significant throttle lag/hesitation when trying to accelerate from a dead stop. Throttle input isn-??t instant, sometimes the delay in acceleration from a dead stop has put me in dangerous situations when pulling out to the road way or having to move out of the way.

- Oak Grove, MN, USA

On Wednesday 10/21 at approximately 11:30pm I was traveling on the Clearview Expressway. While changing from the middle last to the left lane at 20mph due to a construction merge with some traffic. When trying to accelerate the truck lost all throttle power and my speed quickly dropped to 12mph before throttle response came back. No noticeable or harsh change of gear for this episode.

- Massapequa, NY, USA

On Tuesday 10/21 at approximately 4:30pm I was on the Grand Central Parkway traveling about 50mph. When trying to accelerate the truck lost all throttle power and I quickly lost speed down to 40mph before throttle response came back. There was a noticeable change in gear upon throttle resuming.

- Massapequa, NY, USA

On Saturday 10/18 I was traveling about 60mph on the Long Island Expressway at approximately 12:30pm when I went to accelerate to pass a vehicle. Immediately upon pressing the accelerator the truck lost all throttle power and I quickly lost speed down to 45mph before throttle response came back. The truck harshly went into gear once throttle power resumed.

- Massapequa, NY, USA

The vehicle has acceleration hesitation. Sometimes when trying to go from a complete stop the vehicle is almost dead and doesn-??t move then it feels as if the -??clutch was popped -?? in a manual but it is an automatic.

- Wilmington, CA, USA

The truck has a very pronounced hesitation to accelerate after slowing down or coming to a stop. Example: slow down, come to a stop at a stop sign and then accelerating to start moving. This situation happens daily and almost on every occasion after slowing or stopping. It has gotten worse over time and this issue has put me and my family in very dangerous and scary situations as the truck does not accelerate promptly and oncoming traffic is getting closer. It really has made me concerned to drive my truck and feel unsafe doing so, especially with my family.

- Cypress, CA, USA