ToyotaSienna2018
  1. Toyota Sienna
  2. Problems
  3. 2018
  4. Power Train

2018 Toyota Sienna Power Train Problems

6
Owner complaint records in our dataset

Records are owner complaints, not a measured failure rate.

Owner complaint recordsComplaint records reflect reports in our dataset and do not measure how frequently the problem occurs across all vehicles.

Mileage in stored records

BandRecords
1–30k mi2
30–60k mi1

Complaint records

Owner-submitted complaint content, presented as stored.

  • July 1, 2019 · 35,000 miles

    Power Train

    Delay in downshifting when throttle is pressed. A delay of 1 to 2 seconds occurs then abruptly downshifts and the engines revs loudly.

    ODI 11243088

  • March 18, 2019

    Power Train · Vehicle Speed Control

    I was turning left on country road at 25mph the car decelerate and yellow warning came on the dealer said the car thought it was going to roll over they did the soft ware up date the car still decalrate yellow light come on most of time when starting up

    ODI 11210734

  • March 2, 2019 · 10,000 miles

    Power Train · Service Brakes · Vehicle Speed Control

    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 [redacted], colorado springs, co 80923, [redacted]) was notified of the failure. The contact stated that the failure…

    ODI 11184028

  • January 27, 2019

    Power Train

    2018 toyota sienna le. Consumer writes in regard to delayed acceleration which is causing transmission damage. *as *tr

    ODI 11175491

  • October 10, 2018 · 4,500 miles

    Power Train · Vehicle Speed Control

    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…

    ODI 11170282

  • July 1, 2018

    Engine · Power Train

    My 2018 sienna le is experiencing acceleration problems. I had the software up dated but after approximately 1,000 miles the problem is returning. This problem is especially unsafe when merging onto the highway.

    ODI 11131655