really awful
Crashes / Fires:
15 / 0
Injuries / Deaths:
23 / 2
Average Mileage:
27,188 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2007 Toyota Sienna engine problems

engine problem

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2007 Toyota Sienna Owner Comments (Page 2 of 2)

« Read the previous 20 complaints

problem #6

Jul 112007


  • 0 miles


The contact owns a 2007 Toyota Sienna. The contact stated that immediately after starting the vehicle the rpms increased excessively and she smelled gasoline. The vehicle also began to accelerate while driving up a hill without engaging the pedal. The fuel tank does not hold the fuel capacity that was listed. The failure has occurred intermittently since the vehicle was purchased. The vehicle has a habit of lunging forward on it's own within minutes after it was turned on. The failure mileage was 14000.

- Eureka, CA, USA

problem #5

Sep 122007


  • 500 miles
The contact has a 2007 Toyota Sienna. The contact states that the vehicle is idling extremey high. The vehicle will pull off very fast from the light and will accelerate even on a hill. The contact feels this may become a safety hazard. The contact stated that the vehicle seems to be pulling away even when the brake is pressed. The failure mileage was 500 and the current mileage was 14959.

- Eureca, CA, USA

problem #4

Oct 172009


  • 31,593 miles
On October 17th, 2009, while pulling into the parking lot of mcdonald's, my van sudden accelerated as I entered the parking space, the motor was roaring. I would have been turning into my space, my foot would have been over the brake and I may have started to press the brake. When the vehicle surged forward, thinking my foot was on the gas, I immediately moved it further to the left and pressed the brake to the floor. I remember thinking this thing isn't slowing down one bit nor was it stopping, it felt possessed. It slammed into a heavy duty van, rocking it hard and doing considerable damage to our van. I did tell the officer at the scene that I must have had my foot on the gas, it was the only thing that made logical sense to me at the time. In replaying the events in my mind, I was sure my foot was over the brake, and that I didn't press anything hard until after the vehicle accelerated, after I moved my foot further to the left. I have since amended my report with the officer at the scene and my insurance company. The front-end damage on the van has been repaired. On November 17th a technical specialist from Toyota went over the van. They released the van back to us without telling us anything. My past history will show I am a safe driver and I do not panic easily.

- Russell, PA, USA

problem #3

Dec 102008

Sienna 6-cyl

  • Automatic transmission
  • 50,000 miles


The contact owns a 2007 Toyota Sienna. When placing the vehicle into drive, the contact experienced uncontrolled acceleration. The vehicle accelerated forward and crashed into a concrete wall. There were no warning indicators prior to the failure. The contact injured her knees and a police report was filed. The vehicle was inspected by an insurance adjuster, but it could not be determined why the vehicle failed. The contact called the manufacturer and was informed that there were no defects with the vehicle; therefore, no compensation would be made. The vehicle was destroyed. The failure mileage was 50,000. Updated 3/9/09 updated 03/12/09. 8jb

- Jefferson, OR, USA

problem #2

Mar 122008

Sienna 6-cyl

  • Automatic transmission
  • 3,800 miles
This memo was sent via email on the Toyota website over a week ago and have not received a response from them. I believe the issue is very serious and potentially life threatening. It is regards to a 2007 Toyota Sienna that I own. At least five times in the last 3 months I have experienced a very serious episode with my Sienna. While my foot is depressing the brake pedal and after coming to a full stop, the engine would begin to accelerate very rapidly. I need to push down very hard on the brake pedal in order not to lurch forward. I have been fortunate that I have not hit anything. What should I do. Because the problem only seems to occur randomly once in a while, a mechanic would not see anything wrong. Thank you jerry greenwald

- Brooklyn, NY, USA

problem #1

Nov 152007

Sienna 6-cyl

  • Automatic transmission
  • 3,700 miles
The contact owns a 2007 Toyota Sienna. While driving 10 mph, the vehicle would slow down and then accelerate without warning when the brake pedal was depressed. The dealer was unable to diagnose the cause of the failure. The current and failure mileages were 3,700.

- North Babylon, NY, USA

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