Every record we hold for this vehicle, as plain tables, with nothing added. The consumer page shows the same records with the maintenance schedule, price ranges and nearby shops around them.
vehicle
2021 / toyota / sienna
known issues
7 clusters (reviewed 2026-08-21)
complaints
none on file
recalls
0
investigations
0
fars
6 occupant deaths, crash years 2010-2024 (legacy-code)
Hybrid brake system surge during brakingSERVICE BRAKES72 complaints2021-07 → 2026-07 (200 of 202 total complaints shown)sienna-2021-hybrid-brake-surge
11542558 Our 2021 Toyota Siena LE AWD has an issue with the brakes randomly releasing briefly when slowing to a stop. While slowing to a stop with steady pressure on the brake pedal, the braking action will momentarily give out, resulting in the vehicle lurching forward beyond the…
11579045 while steady pressure is being applied to the brake pedal, the brakes will randomly release and the car will actually accelerate briefly. While attempting to slow or stop the vehicle with steady pressure on the brake pedal, the braking action will momentarily give out, resulting…
11560945 Over the past month or so, when braking, we have experienced a jolt of power after decelerating despite keeping the brake pedal being depressed. A representative from Waites Toyota Service Department took the vehicle for a test drive and experienced the same issue
Airbag recall 23V865000 remedy unavailabilityAIR BAGS34 complaints2021-10 → 2026-07 (200 of 202 total complaints shown)sienna-2021-airbag-recall-23v865
11604502 The contact owns a 2021 Toyota Sienna Hybrid. The contact received notification of NHTSA Campaign Number: 23V865000 (Air Bags); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for
11641188 Recall 23TB15 was issued on Dec. 20, 2023. The remedy was supposed to be out by the 3Q24. I just called dealer service, and there is still not a remedy out. I am driving a car without knowing if the front passenger seat airbag would deploy in an accident
11571905 The contact received notification NHTSA Campaign Number: 23V865000 (Air Bags) however, the remedy to repair the recall was not available. The contact stated while driving from a stop light, another vehicle crashed into the driver’s front side door. The contact mentioned the…
Third-row seat latch failure in stowed positionSEATS14 complaints2021-04 → 2025-03 (200 of 202 total complaints shown)sienna-2021-third-row-seat-latch
11423175 twice in the last two weeks while I was driving the car, the seats popped up out of the rear well and latched violently into place. The first time this occurred was driving over a pothole at about 40 mph, and the second over a speed bump at about 25 mph. I was terrified
11464997 Both portions of the seats do not stay in the stowed position. Initially I assumed it was user error such as not pushing them down all the way or something not latching. After evaluation, the 2021 Sienna 3rd row seats do not have a way to latch down. When stowed and…
11543420 Third Row Seats does not stay stowed and while driving over a hump the seats ended up moving away from the potential stowed position and locked itself in the upright position. the noise was so loud that we thought something had banged on the car
Catastrophic engine failure with connecting rodENGINE6 complaints2025-08 → 2026-05 (200 of 202 total complaints shown)sienna-2021-engine-catastrophic-failure
11687704 the vehicle suddenly displayed a low oil pressure warning, immediately lost power, and entered limp mode. I was able to pull over safely, but the engine then suffered a catastrophic failure — a connecting rod blew through the engine block, leaving large metal fragments inside…
11640756 Turned on my minivan to begin backing out of the driveway when it began violently shaking and exploded. Was not due for an oil change, was not low on oil, passed an engine inspection 5 days prior. 2 holes through engine block caused by either connecting rod or piston
11712404 I turned on my minivan to drive my kids to school when I heard a sudden loud metal shredding/knocking and shut my van off. All maintenance was performed regularly on the van and no lights were on. I have a hole in my engine block now caused by a thrown rod
Sunroof glass spontaneous breakage while drivingVISIBILITY:SUN/MOON ROOF ASSEMBLY4 complaints2021-10 → 2025-04 (200 of 202 total complaints shown)sienna-2021-sunroof-spontaneous-breakage
11435445 The contact stated while driving 55 MPH, the sunroof exploded outward from the vehicle while closed. The contact stated that upon inspecting the sunroof he noticed that 80% of the glass was missing from the vehicle
11437032 We were driving approximately 50mph in the late afternoon (4:15pm MT) on a sunny day (about 60 degrees F). We were on a 2-lane road with farmland/field on both sides, with no debris on the road and we were not behind any other vehicles. The sunroof was fully closed (the…
11657025 While driving at 60 mph with all windows up, the sunroof spontaneously exploded. No vehicles near me, no debris in roadway, 70 degrees and sunny
Rear underbody AC line galvanic corrosion and leakVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM2 complaints2025-08 → 2026-06 (200 of 202 total complaints shown)sienna-2021-rear-ac-line-corrosion
11681563 Believe rear AC lines had galvanic corrosion from differing metals, steel bracket with aluminum line-sets causes corrosion hole in refrigerant line set, and leak causing loss of all Freon. No warning lights or messages, AC just stop blowing cold. Vehicle is driven in Michigan on…
11745261 a heavy steel mounting bracket has rusted excessively, causing localized galvanic corrosion at the point of contact with the adjacent aluminum AC lines. This structural and material failure caused the aluminum line to erode, crack, and leak high-pressure chemical refrigerant…
Rear entertainment screen blocking rearview mirror sightlineVISIBILITY/WIPER3 complaints2021-04 → 2021-06 (200 of 202 total complaints shown)sienna-2021-rearview-blocked-entertainment
11414013 WHEN MY KIDS ARE USING THE REAR ENTERTAINMENT SYSTEM, THE SCREEN BLOCK THE DRIVER REAR MIRROR LINE OF SIGHT. I DON'T FEEL SAFE DRIVING AROUND IF I CAN'T HAVE BACK AND FORTH VISIBILITY FROM THE DRIVER SEAT
11414500 THE 2021 SIENNA XLE PLUS AND ENTERTAINMENT PACKAGE DID NOT INCLUDE A DIGITAL REAR VIEW MIRROR IN THIS TRIM LEVEL. THE NEW SIENNA IS A BRAND NEW MODEL WITH A MASSIVE DESIGN FLAW, A HUGE TV WITH ZERO VISIBILITY OUT THE REAR OF CAR. IT'S UNSAFE
FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road.
Cite this
Derived data is CC BY 4.0. Link back to the page you used. Text and BibTeX below.
Wrench.Pro (2026). 2021 Toyota Sienna vehicle data [dataset]. https://www.wrench.pro/data/vehicles/2021/toyota/sienna
@misc{wrenchpro_2021_toyota_sienna_2026,
author = {Wrench.Pro},
title = {Wrench.Pro vehicle data: 2021 Toyota Sienna},
year = {2026},
howpublished = {\url{https://www.wrench.pro/data/vehicles/2021/toyota/sienna}},
note = {Derived from NHTSA public records. CC BY 4.0.}
}
