Acceleration complaints by model year
| Year | Complaints | Share of year's complaints | Typical mileage |
|---|---|---|---|
| 2019 | 3 | 7% | 12,000 miles |
| 2018 | 5 | 7% | 33,000 miles |
| 2017 | 6 | 4% | 6,000 miles |
| 2016 | 2 | 3% | 30,000 miles |
| 2015 | 3 | 1% | 48,000 miles |
| 2014 | 11 | 7% | 79,000 miles |
| 2013 | 6 | 3% | 28,000 miles |
| 2012 | 11 | 4% | 9,000 miles |
| 2011 | 20 | 3% | 20,000 miles |
| 2010 | 19 | 11% | 43,000 miles |
| 2009 | 13 | 6% | 40,000 miles |
| 2008 | 51 | 12% | 44,000 miles |
| 2007 | 28 | 8% | 45,000 miles |
| 2006 | 50 | 5% | 68,000 miles |
| 2005 | 62 | 5% | 71,000 miles |
| 2004 | 111 | 5% | 63,000 miles |
| 2003 | 11 | 10% | 75,000 miles |
| 2002 | 10 | 6% | 98,000 miles |
| 2001 | 9 | 5% | 145,000 miles |
| 2000 | 20 | 6% | 153,000 miles |
| 1999 | 5 | 2% | 122,000 miles |
| 1998 | 8 | 3% | 102,000 miles |
Which parts fail
Components named in complaints (accelerator pedal, throttle, sudden acceleration, cruise control).
Mileage when the problem started
What owners report
The contact owns a 2019 Toyota Sienna. The contact stated that the front end of the vehicle would lunge downward towards the road surface when depressing the brake pedal. Additionally, the contact stated while reversing in a parking lot of the Doctor's offices, the vehicle accelerated at high speed independently. The contact depressed the brake pedal as hard as he could with both of his feet; however, the rear end of the vehicle crashed into the rear end of another occupied vehicle. The air bags failed to deploy. An unknown warning light illuminated. The contact sustained bruises on the left arm but did not seek medical assistance. The other occupied vehicle had three passengers including a baby asleep in a car seat located in the rear seats. The contact was unsure whether the other three passengers sustained injuries. …
The contact owns a 2019 Toyota Sienna. The contact stated that after he entered the vehicle, he depressed the brake pedal to start the vehicle. After the vehicle was started, he shifted into reverse(R) while the brake pedal remained depressed; however, the vehicle inadvertently accelerated without warning. In a desperate attempt to stop the vehicle from crashing into another vehicle, the contact shifted into drive(D) while the brake pedal remained depressed. The contact then stated that he applied pressure to the brake pedal to stop the vehicle from accelerating when the vehicle then jumped the curb and struck a garbage can. The contact then shifted into reverse(R) while the vehicle continued to accelerate to move away from the garbage can and then shifted in neutral(N). The contact then shifted back into park(P). …
Tl* the contact owns a 2018 Toyota Sienna. While driving approximately 45-50 MPH, the accelerator pedal was depressed, but failed to respond. Additionally, the vehicle decelerated independently on occasion. The vehicle was not diagnosed or repaired. Larry h miller Toyota colorado springs (located at 5115 new car dr, colorado springs, co 80923, [phone]) was notified of the failure. The contact stated that the failure recurred on several occasions. The manufacturer was not contacted. The approximate failure mileage was 10,000. The consumer stated the while backing out of a parking space, the vehicle suddenly stopped reversing and the engine began to rev up as if the gas pedal was being depressed. The vehicle was put into park and back into reverse. The issue resolved itself. The braking system would shutter when in snow or ice causing the vehicle to vibrate violently and lose traction.
The van struggles to accelerate. There is no way to turn off eco mode. No button is available. Van struggles to go up hills , excelerate thru intersections and always hunting for gears or stuck in a gear and sounds and acts very heavy on power train end. There is an option to turn off eco light.turning off eco light does nothing but hide the problem. We need an option to complete disable eco mode with update or with a button.
Today 4/7/23 My 2017 Toyota Sienna accelerated on its own. I was driving my 4 children to school and we were at a stop light. When I took my foot of the brake to start making a turn the car gunned it around the corner. It scared everyone in the car half to death. Thankfully no one was hurt but it looks like others on here haven't been so lucky with this issue. I hope toyota does the right thing a d fixes this issue before more people die.
Our 2016 Sienna which we purchased last May accelerated on it's own on 2/16/2017 going through our south outside wall and master bathroom of our house. My husband left the van in the driveway, unloaded the groceries, then got back into the van, started it, put his foot on the brake, shifted to drive and with his foot on the brake the van accelerated into the the garage. We have an extended garage which had an office area and it proceeded to push the oak desk through the south east outside wall and master bath. As it continued to accelerate and burn rubber on our finished garage floor, with his foot still on the brake slammed it into reverse. The Sienna shot out of the garage, headed down our drive, into our lawn and over our winter snow stakes. Knowing it was not stopping and the brakes were not working other than letting him put the car into gear, he once again slammed it into drive. …
I was at a stop light when I slowly started to lift my foot from the brake pedal. The engine started revving up and accelerate. I pressed the brake pedal normal , then harder when it would not stop revving. I looked down to see if I was hitting the gas pedal by accident. I was not, about after 5 seconds it stop revving. I went about a foot and nobody was in front of me. I going to have it checked out by my dealer. This happened before and I thought it was driver error .When I thought I was hitting the gas pedal and brake pedal. I searched for incidents like mine, but could not find something exactly just similar. I did not look at the dashboard so i do not know if there was a message . So I'm reporting this incident to get answers and alert others of this issue.
Tl* the contact owned a 2015 Toyota Sienna. The contact stated that the cruise control failed to deactivate when the brake pedal was depressed. As a result, the vehicle was involved in a front impact collision. The air bags deployed. The contact sustained a severe head injury, the front seat passenger sustained a broken nose and cracked ribs, and the rear seat passenger sustained minor injuries. Medical attention was required. A police report was filed. The vehicle was destroyed and towed to a salvage yard. The manufacturer was notified of the failure. The failure mileage was approximately 13,000. The VIN was not provided.
Related recalls (1)
Vehicle speed control › Accelerator pedal
Toyota is conducting a safety improvement campaign involving 26,501 early 2004 my sienna vehicles. In the event the retention clip used to secure the floor carpet cover is missing, the cover can interfere with the operation of the accelerator pedal if the acceleration pedal is depressed to nearly the full throttle position.
Remedy: Dealers will replace the retention clip and floor carpet cover at no charge. The campaign began on January 26, 2009. Owner notification is expected to be completed by early April 2009.
NHTSA investigations
Accelerator pedal interference
In a June 25, 2008, letter responding to an information request from odi, Toyota reported an April 2003 unwanted acceleration incident that occurred during production dynamometer testing.according to the letter the incident was caused by a missing retaining clip that allowed the center console trim panel to interfere with (trap) the accelerator pedal after it had been depressed.in the aftermath, Toyota reviewed…
Accelerator pedal interference
In a June 25, 2008, letter responding to an information request from odi, Toyota provided information about an accelerator pedal interference incident that occurred during production dynamometer testing at the assembly plant for an early production my 2004 sienna minivan.the incident was caused by a missing retaining clip that allowed the center console trim panel to interfere with (trap) the accelerator pedal after…
Frequently asked questions
Which Toyota Sienna years have acceleration problems?
By NHTSA complaints, the 2004 (111), 2005 (62), 2008 (51), 2006 (50) and 2007 (28) model years. Acceleration complaints make up 5% of all complaints for the 2004.
Is there a recall for Toyota Sienna acceleration problems?
Yes — 1 recall, including 09V-023 (accelerator pedal, Jan 16, 2009). Recall repairs are free at authorized dealers; check a specific car with the VIN recall check.
At what mileage do Toyota Sienna acceleration problems start?
Across all years, half of the complaints with a recorded mileage happened before about 62,000 miles; 48% happened before 50,000 miles.
What part fails most often?
Owners most often name the accelerator pedal (21 mentions), followed by the cruise control (8).
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.