Vehicle purchased less than year ago. Vehicle has approximately 10,000 miles on it. I am on my second rear differential replacement. The original and the first replacement were both making a whining noise. Dealer inspected and found metal shavings in both. There are numerous complaints of similar situation on Tacoma owner websites. A new vehicle that is less than a year old should not be on its 3rd rear differential. A failure of the rear differential at high speed or in congested traffic could have catastrophic consequences for occupants as well as any other nearby vehicles.

- Sneads Ferry, NC, USA

The truck will accelerate on its own during highway speeds of 60+ MPH and residential 25+ MPH. Also accelerates when coming up to a stop sign causing me to almost hit a child in a crosswalk. There was no cruise control engaged during the incidents. I took it into the Autonation toyota dealership twice and they said they could not reproduce and or duplicate the problem. It is very frightening when it happens as it lasts between 4-5 seconds if you do not apply the brakes hard. There has not been any warning lights or anything that comes up on the dash board.

- Spokane, WA, USA

My 2021 Toyota Tacoma is experiencing these exact conditions as discussed in this TSB. T12he only difference between the vehicle in this TSB and mine is I have a 2 wheel drive Tacoma and this TSB is for the 4 wheel drive model. 2021 Toyota Tacoma power train TSB (Bulletin T-SB-0124-20) Bulletin Date:Dec. 15, 2020 Component:Power train. Bulletin Summary:TSB: some 2016 ? 2021 model year tacoma vehicles equipped with an automatic transmission may exhibit a vibration under deceleration (coasting or braking) between 30 ? 10 mph. This vibration is felt in the seat, floorboard, and/or steering w Vehicles covered in this TSB: 2016 Toyota Tacoma, 2017 Toyota Tacoma, 2018 Toyota Tacoma, 2019 Toyota Tacoma, 2020 Toyota Tacoma, 2021 Toyota Tacoma.

- Spring Hill, FL, USA

I was my 2021 Toyota Tacoma home after work on the highway at night at 11:00 pm. While on the highways there was highway construction and traffic was coming to a stop. I was driving in the slow lane doing 60-65. As I approached the stopped traffic i let my foot of the accelerator pedal and put my foot on the brake pedal to slow down, as i did this the rpm's jumped up to 4000 and the truck went to take off full speed on its own. I held the brake pedal down to the floor and i shifted the truck from drive mode to sport mode than back to drive mode. ( I panicked) but soon as i did that the engine stopped accelerating thankfully because i had many stopped cars in front of me that i would have plowed into. I love my truck but I am not scared to drive it always have my hand on the shift waiting for it to happen again possibly.

- Randolph, MA, USA

When starting and stopping there is a clunking noise coming from the rear of the vehicle.

- Homer , NY, USA

Visible oil leak or staining in rear differential is consistent with a prior recall in 2016-2016 model years as described in this document https://static.nhtsa.gov/odi/rcl/2017/RCAK-17V285-5030.pdf. This is a 2021 model year vehicle, purchased brand new in January 27, 2021, with less than 10,000 miles. This document indicates that "If the vehicle is operated with an insufficient amount of oil in the rear differential, the differential may seize and cause a loss of control, increasing the risk of a crash."

- Monroe, LA, USA

Vehicle will not hold 6th gear while in cruise control. Vehicle will suddenly down shift to 5th and sometimes 4th. This makes the vehicle surge forward abruptly.

- Moreno Valley, CA, USA

Upon acceleration vehicle will have delayed engagement, up to and including a near stall or stuttering. Has led to several near misses (X2). The tss system takes over and does it's thing versus allowing the driver to drive the vehicle for the conditions. Example would be automatic application of brakes due to deer in road causing loss of control on an icy road way. Driver released gas pedal and was coasting as deer was crossing. Due to brakes being automatically applied, vehicle began to slide, deer became spooked and stopped crossing, vehicle ended up partially in the ditch. After multiple occurrences (5+ memorable), driver has lost all faith in the safety and reliability of this vehicle and does not Transport passengers as they fear for the passenger's safety. Driver only utilizes vehicle because it is their last and only means of Transport.

- Dousman, WI, USA