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Other or unknownPart report

2018 Toyota Sienna Other or unknown Problems

Complaints
14about this part
Share
19%of 72 total for the year
Median mileage
9,962miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 14 complaints about the other or unknown of the 2018 Toyota Sienna, 19% of the 72 complaints for this model year. Where a mileage was given, the median is 9,962 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“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”

NHTSA complaint #11391084, filed 2021-02, 16,000 miles

“I am unable to pay my renewal registration fee because there is no available remedy for the recall on my vehicle yet. I am not sure what to do at the moment. The dmv told me to contact my dealer. But my dealer responded by stating that there is no remedy to fix the vehicle yet. The dealer said that I should notify the dmv so that they could investigate further and allow me to pay my dues. This current covid-19 pandemic has made it difficult for me to get in contact with the dmv.”

NHTSA complaint #11325626, filed 2020-05, 10,000 miles

“My van has been sitting in the driveway during the covid-19 lockdown. One day I noticed a crack from top to bottom down the middle of the windshield. This has to be due to a manufacturing defect because there was no accident, no trees above the van, and the pattern is not the same as windshields that have been hit by rocks. This model van has had multiple safety recalls and a class action lawsuit so I won't be surprised if this was a manufacturing defect. My hope is that this will turn into a safety recall and Toyota takes responsibility and fixes it. …”

NHTSA complaint #11324788, filed 2020-05, 8,020 miles

“1. Even to go on a small uphill slope, the vehicle(v6) really struggles. And when I try to accelerate, it kind of stalls or slows down for a moment, then tries to speed up but its still very slow. I'm facing this issue every day. My other car 2011 camry(v4) is very smooth at the exact same places. Cant believe the pickup is this poor with a new car. 2. On highways, just to maintain the speed over 65 MPH on a recent trip, I had to press real hard on gas the whole time, even after that, I can clearly tell the vehicle was working extra hard just to be over 65. …”

NHTSA complaint #11152940, filed 2018-11, 1,200 miles

“The pcs stopped our van abruptly with no warning and did not slow down. Cruise control set at 75 MPH north bound on tx hwy 69 between alto and rusk, tx. No rain smooth road late at night only the car in front of us. No other traffic. I screamed. Husband had fallen to sleep at the wheel even though we had taken a long nap in huntington, tx. We were on our way back home from my sister's funeral in nederland, tx.. I could see inside the read window of the car we stopped behind. No collision but injured my neck. Have medical records, was treated for neck injuries in jacksonville, tx and tyler, tx”

NHTSA complaint #11321936, filed 2020-04, 32,148 miles

Related service bulletins

Other or unknown: other model years

YearComplaintsShare of year
2022119%
20212918%
2020616%
2019920%
20181419%
20172717%
20161418%
20154821%
20142817%
20133318%
20122811%
20116410%
20102716%
20093718%
2008389%
2007349%
2006596%
2005585%
20041075%
200322%
200232%
200184%
2000134%
1999167%
199862%

Other parts of the 2018 Toyota Sienna

Transmission and drivetrain
20 complaints
Fuel system
13 complaints
Electrical system
7 complaints
Air bags
5 complaints
Engine
5 complaints
Body and structure
5 complaints
Vehicle speed control
5 complaints
Seats
4 complaints
Brakes
2 complaints
Visibility (wipers, defrost, mirrors)
2 complaints
Equipment
1 complaints
Exterior lighting
1 complaints

← All problems reported for the 2018 Toyota Sienna

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology