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6.5

fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
10,600 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.

2018 Toyota Sienna engine problems

engine problem

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2018 Toyota Sienna Owner Comments

problem #5

Sep 092024

Sienna

  • miles

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

The contact owns a 2018 Toyota Sienna. The contact stated while driving at an undisclosed speed, the vehicle jerked and lost motive power. In addition, the contact stated that on several occasions the vehicle shut off independently. The vehicle was taken to the dealer; however, the failure could not be duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. In addition, the contact stated that the vehicle was taken to the dealer several times due to the failure. The contact stated that the failure began in 2019 but had become a persistent failure. The contact stated the vehicle was repaired under of an unknown recall and the fuel pump was replaced in 2020; however, the failure reoccurred. The manufacturer was not made aware of the failure. The failure mileage was unknown.

- Menifee, CA, USA

problem #4

Sep 042023

Sienna

  • miles
N

- Columbia , MD, USA

problem #3

Jan 272021

Sienna

  • 16,000 miles
Mobility works sold me a car, that had a recall, designed for special needs, they knew avout it plus the ramp wasnt working properly, made me pay for an expensive warranty that doesnt cover the problem that already has, they are blaming me for misuse I got it 4 months ago my son doesnt weight more than 100 pounds

- Moreno Valley, CA, USA

problem #2

May 012018

Sienna

  • 37,000 miles
The contact owns a 2018 Toyota Sienna. While driving at low speeds making a right turn the oil warning indicator light illuminated and contact noticed the oil was low. The vehicle was taken to mechanicsville Toyota 6546 mechanicsville turnpike, mechanicsville, va 23111(804) 559-8000 where it was diagnosed that the oil was low and additional oil needed to be added.the vehicle was repaired however, the failure recurred. The manufacturer was contacted but no further assistance was provided. The failure mileage was 3,700. The VIN was not available.

- Mechanisville, VA, USA

problem #1

Jul 012018

Sienna

  • miles
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.

- North Reading, MA, USA

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