Fourth generation
2021 Toyota Sienna Hybrid
The most reported problem on the 2021 Toyota Sienna Hybrid is brake wear, with 87 complaints, usually around 35,000 miles.
- 208owner complaints
- 4recalls
- 14involved a crash
- 35,000median miles at failure
Newest report Sep 15, 2026 · checked Sep 27, 2026
What is your Sienna Hybrid doing?
Each one opens a sheet built from the owner reports of that problem on the 2021 model year.
Is the 2021 Toyota Sienna Hybrid reliable?
The 2021 Toyota Sienna Hybrid has 208 owner complaints on file with NHTSA, close to the median of 208 for 2021 minivans on this site. Of the 6 Sienna Hybrid model years since 2021, it has the 2nd most complaints. Complaint counts rise with sales as well as faults, so read what owners report below before deciding.
At a glance
- Next to the 2022
- At 35 complaints for each year on the road, the 2021 runs above the 2022 (28). That's the only adjacent model year with enough complaints to set beside it.
- Top problem
- One problem takes up much of the file: brake wear, named in 87 of the 208 complaints (42%). A quarter of the 11 owners who gave a mileage for brake wear saw it by about 29,000 miles, and half by about 35,000.
- Crash, fire and injury reports
- 19 of the 208 complaints (9%) report a crash, a fire or an injury. The typical vehicle on this site sits at 6%, so this one runs well above it. Counted separately (one report can carry more than one), 14 reports mention a crash, 4 mention a fire and 12 people were hurt. The most crash reports, 8 of 14, fall under brake wear.
- Recalls behind the top problems
- Airbag and seat belt each have a recall on the same system (23V-865; 25V-086). Brake wear has none. A recall on the same system doesn't always cover the failure owners describe, so compare its summary with the complaints.
- When owners filed
- Filings peaked in 2024 at 55 (full calendar years only). In 2025 there were 32. So far in 2026, 24 more have come in.
When each problem shows up
Each bar covers the middle half of the mileages owners reported for that problem. A quarter saw it earlier, a quarter later. The tick is the median. Most reported: brakes grind, pulse or wear early, 87 complaints.
middle half of reports, median tick. The heavier grey bars have 75 or more reports.
Behind you
Around your mileage
Ahead of you
How this compares
208 complaints is about the median for a 2021 model on this site and about the median for a 2021 minivan. Among the 4 Sienna Hybrid model years here it ranks 2nd for complaints. Counts follow sales volume as much as reliability, so a truck that sells 700,000 a year draws more reports than a sedan that sells 200,000.
Service bulletins for the 2021 Toyota Sienna Hybrid
Toyota filed 207 bulletins and other notices with NHTSA that list the 2021 Toyota Sienna Hybrid. 24 of them deal with a problem owners have reported on this car. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
Brakes grind, pulse or wear early 3 bulletins · 87 complaints
Some drivers of 2021 – 2024 model year Sienna Hybrid vehicles may be sensitive to the momentary transition from regenerative braking to hydraulic braking under certain driving conditions, such as while driving downhill, or turning with light brake pedal ...
TT: Any customer brake concern in the New York and Boston Regions ONLY.
1 more on this problem
Some customers may notice an abnormal brake feel in their 2021 model year Sienna Hybrid vehicle that could be described as a longer than usual brake pedal stroke.
Airbag warning light or recall 1 bulletin · 29 complaints
Some 2005 ? 2022 model year Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty smell is present. Follow the procedures in this bulletin to remediate the odor and address this condition.
Seat belt or seat problems 2 bulletins · 29 complaints
Some 2010 ? 2022 model year Toyota vehicles may exhibit paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard?.
Some 2010 ? 2021 model year Toyota vehicles may exhibit paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard?.
Hybrid or EV system warning, loss of power 12 bulletins · 9 complaints
TECHNICAL INSTRUCTIONS FOR CUSTOMER SUPPORT PROGRAM 22TE09 HV FLOOR UNDER WIRE HARNESS AND REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2021 – 2024 MODEL YEAR SIENNA HYBRID
Some 2021 – 2024 model year Sienna Hybrid vehicles equipped with a Blind Spot Monitor may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) C1AC200 (Rear Side Radar Sensor Beam Axis Misalignment) present and Blind Spot Monitor inoperative system ...
10 more on this problem
TI: TECHNICAL INSTRUCTIONS FOR CUSTOMER SUPPORT PROGRAM 22TE09 HV FLOOR UNDER WIRE HARNESS AND REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2021 ? 2022 MODEL YEAR SIENNA HYBRID
Some 2021 ? 2023 model year Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P060694 (Hybrid/EV Powertrain Control Module Processor Unexpected Operation) present.
Some 2016 ? 2023 model year Toyota vehicles may exhibit a hybrid system warning lamp occurring in below-freezing temperatures (below 32°F or 0°C).
Some 2021 ? 2022 model year Sienna Hybrid vehicles may exhibit a condition in which the fuel gauge reading changes when the vehicle is driven up or down an incline and left at an angle of up to 15° for five minutes or longer.
Some 2020 ? 2023 model year Highlander Hybrid and 2021 ? 2023 model year RAV4 Hybrid, RAV4 Prime, Sienna Hybrid, and Venza Hybrid vehicles may exhibit a MIL ON condition with one or both of the following Diagnostic Trouble Codes (DTCs) present: ?P24517F ? ...
TT: MIL ON with DTC(s) present for Hybrid/EV Battery Cooling Fan Circuit.
Some 2020 ? 2022 Highlander and Highlander Hybrid and 2021 ? 2022 Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0087 (Fuel Rail/System Pressure ? Too Low) and/or P107A2A (Fuel Rail Pressure Sensor (Low) Signal ...
Some 2020 model year Camry, Camry Hybrid, Corolla Hatchback, RAV4, and RAV4 Hybrid vehicles may exhibit one or more of the following conditions: ?Diagnostic Trouble Code (DTC) B15A804 is present in current or history. ?Red SOS LED stays on after bulb check.
Some 2021 model year Sienna Hybrid LE vehicles may exhibit a condition of inoperative remote functions from the app or key fob, such as remote engine start or door lock/unlock functions.
Some 2021 model year Sienna Hybrid vehicles may exhibit a depleted 12V auxiliary battery when in IG-OFF due to a condition in which the Hybrid Vehicle Electronic Control Unit (HV ECU) does not sleep.
Infotainment, screen or backup camera fails 6 bulletins · 7 complaints
Some 2018 ? 2024 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, M20A-FKS, or M20A-FXS engine may exhibit one or more of the following conditions: ?Milky/discolored engine oil.
TT: Vehicles listed above equipped with a Denso Ten radio (Entune Audio Plus or Premium Audio) may exhibit a condition in which the radio screen continues to show a Bluetooth phone call in progress after the call has ended.
4 more on this problem
Some 2020 model year vehicles equipped with Audio Plus (version 1060) or Premium Audio (version 1060) or earlier may exhibit the following condition: ?Distorted screen when using Apple CarPlay® while making a hands-free phone call.
Some 2018 ? 2022 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, or M20A-FKS engine may exhibit one or more of the following conditions: ?Milky/Discolored engine oil.
TT: Some vehicles equipped with Premium Audio systems may experience an inoperative condition that consists of displaying a ?Loading?? then a blank screen when pressing the MAP button.
Some 2020 model year vehicles equipped with Audio Plus (version 1060) or Premium Audio (version 1060) or earlier may exhibit the following concern: ?Distorted screen when using Apple CarPlay® while making a hands-free phone call.
Complaints filed by year
55 complaints came in 2024. Owners file in waves when a problem gets press or an investigation, so a spike measures attention as much as failures.
NHTSA investigations
Pedestrian alert sounds. Closed aug 7, 2023, led to recall 22V-063.
NHTSA summary
Recalls that include the 2021 Toyota Sienna Hybrid
Whether your car is included depends on its VIN. Check yours at nhtsa.gov/recalls.
Vantage Mobility, LLC (VM) is recalling certain 2021-2026 Honda Odyssey, 2021-2025 Chrysler Pacifica, and Toyota Sienna vehicles equipped with QRT-Deluxe and QRT-Max wheelchair restraints. The retractors may not lock, preventing the wheelchair from being properly secured.
Risk and remedy
Remedy: Dealers will inspect and replace the retractors, free of charge. Owner notification letters was mailed January 27, 2026. Owners may contact Vantage Mobility customer service at 1-800-488-9082.
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2021-2025 Sienna Hybrid vehicles. The bolts for the seatbacks on the third-row seat assemblies may not be tightened properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) numbers 202, "Head Restraints," 207, "Seating Systems," and 225, "Child Restraint Anchorage Systems."
Risk and remedy
Remedy: Dealers will tighten the seat assembly bolts, free of charge. Owner notification letters were mailed April 1, 2025. Owners may contact Toyota's customer service at 1-800-331-4331. Toyota's number for this recall is 25TA05.
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2021 Avalon, Avalon Hybrid, Corolla, Highlander, Highlander Hybrid, RAV4, RAV4 Hybrid, Lexus ES350, Lexus RX350, Lexus RX450H, 2021 Sienna Hybrid, Lexus ES250, 2020-2022 Camry, Camry Hybrid, and ES300H vehicles. A short circuit may develop in the Occupant Classification System (OCS) sensor, preventing the front passenger air bag from deploying.
Risk and remedy
Remedy: Dealers will inspect and replace the sensor as necessary, free of charge. Interim letters notifying owners of the safety risk were mailed in February 2024. Some final remedy owner letters were mailed October 31, 2024. Letters will continue to be mailed in phases through January 2026. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 23TB15/23TA15 Lexus 23LB03/23LA03.
Toyota Engineering & Manufacturing (Toyota) is recalling certain 2022 Lexus LX 600, Lexus NX 350h, Lexus NX 450h+, Toytoa RAV4 Hybrid, 2021-2022 Lexus LS 500h, Toyota Mirai, RAV4 PRIME, Sienna, Venza, and 2020-2022 Toyota Highlander Hybrid vehicles. The Skid Control ECU software may not turn on the Vehicle Stability Control (VSC) system when the vehicle is restarted after the driver has disabled the VSC system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."
Risk and remedy
Remedy: Dealers will update the Skid Control ECU software, free of charge. Owner notification letters were mailed May 27, 2022. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 22TA03. Lexus' number for this recall is 22LA01.
All 4 recalls on the 2021 Toyota Sienna Hybrid, with the owner complaints on each recalled system
Guide Buying one used? How to research one car’s history before you pay
Questions
What is the most common problem on the 2021 Toyota Sienna Hybrid?
Brake wear, with 87 of the 208 complaints. Owners who gave a mileage for it put the median at about 35,000 miles.
At what mileage do 2021 Toyota Sienna Hybrid problems start?
Of the 34 complaints that give a mileage, a quarter came by about 18,000 miles and half by about 35,000.
Is the 2021 Toyota Sienna Hybrid better or worse than the 2022?
Counted per year on the road, the 2021 has more complaints than the 2022: 35 a year against 28.
How many 2021 Toyota Sienna Hybrid complaints involve a crash, fire or injury?
19 of them (9%). The typical vehicle on this site is at 6%.
Is there a recall for brake wear on the 2021 Toyota Sienna Hybrid?
No recall on file for the 2021 Toyota Sienna Hybrid is on the same system as brake wear. Another recall may still cover your car, so check its VIN at nhtsa.gov/recalls.