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10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
1 / 1
Average Mileage:
101,300 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.

1999 Toyota Sienna engine problems

engine problem

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1999 Toyota Sienna Owner Comments

problem #5

Dec 122020

Sienna

  • 173,000 miles

A D V E R T I S E M E N T S

The van has sudden acceleration problem at times it is hard to slow it down even stop it. The problem mainly occurs from stop and go especially if it has been parked for few hours.

- Sacramento, CA, USA

problem #4

Feb 052012

Sienna

  • 125,000 miles
The contact owns a 1999 Toyota Sienna. While driving approximately 45 mph, the vehicle suddenly accelerated. The contact continued to depress the brake pedal until the vehicle responded and came to a stop. The failure was intermittent and recurred while driving at different speeds. The vehicle was not taken to the dealer for diagnostics or repairs. The approximate failure mileage was 125,000.

- Sacramento, CA, USA

problem #3

May 272001

Sienna

  • 3,500 miles
The contact owns a 1999 Toyota Sienna. The contact stated that the vehicle accelerated in reverse and hit someone that was standing in the garage. There was one fatality due to the failure. The current and failure mileages were 3500. The VIN was not available. Updates 9/21/2011

- Woodinville, WA, USA

problem #2

Dec 162009

Sienna 6-cyl

  • 83,000 miles
Information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6) my 1999 Toyota Sienna, at times unintended accelerated. I was involved in an accident in 2002 with this problem. The van accelerated at I hit a pole. Occasionally it appears that still do the same at times. I take to the dealer one time and they did not SE anything wrong. I am driving really carefully now keeping always two three car distance. Need assistance [xxx]

- Silverpring, MD, USA

problem #1

Jan 212010

Sienna

  • 122,000 miles
I am reporting another Toyota sticky accelerator pedal. Our 1999 Sienna minivan has had 3 incidents of stuck accelerator, the most recent was Jan. 21, 2010. I believe it has become "stuck" between 40 and 45mph. Other incidents were in summer (cannot remember date) and October 2009. The 1st incident was brief and corrected quickly by pushing down on the pedal to "free it", the 2nd incident required braking and putting the car in neutral and shoving the pedal with my foot to the left and right to free it up. I was able to drive the car to the shoulder, turned the car off and then the pedal seemed to work ok, although a bit sluggish response. Our mechanic fixed the throttle body and the car has not had another incident until last week. The most recent incident was more harrowing in that there was not much room to maneuver the car since we were headed for lots of cars stopped at a traffic light. I tried to slow the car by braking hard with the left foot and shoving the accelerator. Pedal down and side to side while in neutral but this did not work quickly like the October incident. I was able to pull over to a shoulder before crashing but it took much longer for the car to stop this time, and I actually threw the car in park to stop the car! I turned off the car and after a few minutes, was composed enough to drive it. Our dealer will check the car Jan 29. The floor mat does not appear to be involved jamming into the pedal, so it is probably a mechanical "catch" that is getting hung up when the pedal is down a certain distance. We thought the safety gurus would want to know. Luckily no crashes have occurred yet!

- Annapolis, MD, USA

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