2019 Toyota Sienna: engine and transmission complaints
ELEVATED COMPLAINT SIGNAL
38%
15 of 39 relevant owner complaints are about the engine, transmission or fuel system
38% of relevant owner complaints on the 2019 Toyota Sienna are about the engine, transmission or fuel system. That is elevated. Worth an independent inspection before you commit to one.
Better than 56% of the 1,230 model years we track (2010–2023).
Excludes 6 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 33%).
The percentage is each model year's drivetrain complaint share. No elevated signal describes the model year, not any one car; a well-kept example of a flagged model can still be the right buy, and any of these still needs an inspection.
What owners reported
POWER TRAIN04/16/2026
2019 Sienna XLE with 77,000 miles has a UA80 Transmission is whining at the final gear per Imperial Toyota Milford MA service center. They want to replace the transmission for 9,000 USD and Toyota Corporate refuses assistance. It appear to be a common defect which could lead to transmission lockup if the gear fails.
POWER TRAIN12/07/2025
Transmission has failed and been replaced. This is part of issues from 2017 to 2020 tranny failures, loud whining and needing to be replaced. Tranny failure is very dangerous to the occupants. Toyota has failed to warranty these.
POWER TRAIN06/29/2025
sever transmission whine started at 138k miles over a year ago.Toyota will not fix issues under recalled ua80 transmission. Said my vin doesn’t fall within recall.
Three of 15 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.
Recall campaigns on this model year (7)
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 4Runner, 2019-2020 Avalon, 2019 Corolla Hatchback, 2017-2019 Highlander, 2018-2020 Camry,…
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Toyota Motor Engineering & Manufacturing (Toyota) recalled certain 2018-2019 4Runner, Highlander, Camry, Land Cruiser, Sequoia, Sienna, Tacoma and Tundra, and Lexus RC 30…
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2019 Sienna vehicles. The passenger front door may have incorrect welds inside, possibly affecting…
This does not say whether a particular car has an open, unrepaired recall. That depends on the VIN.
Before you buy a 2019 Toyota Sienna
Ask the seller whether the transmission has ever been repaired or replaced, and whether the car has shown shuddering, slipping, delayed or harsh shifts, or a whine at speed.
Drive it from a cold start and long enough to warm up. Many transmission faults hide once the car is warm.
Get an independent pre-purchase inspection from a mechanic you choose, and tell them to focus on the transmission.
7 recall campaigns on this model year. Whether a specific car still has one open depends on the VIN; the report checks that.
Ask for service records. A transmission already replaced under warranty is a different car from one that was not.
Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.
Experimental model-level information. This is not a vehicle inspection, vehicle-history
report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition
of any individual vehicle.
