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Toyota Sienna

EPA MPG: 36 mpg

RECALL ALERT:
There are 4 recalls on this vehicle. Learn More.

Reliability

Overall Reliability

The 2021 Sienna is less reliable than other cars from the same model year.

The 2021 Toyota Sienna has been recalled 4 times by NHTSA. View Recalls
Most Common Trouble Spots
Common Trouble Spot
Common Trouble Spot

Owner Reported Trouble Spots

The Reliability score is based on our latest subscriber survey of 2021 Toyota Sienna owners. The owner comments describe problems respondents experienced with this vehicle.

Exhaust

Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.

What Owners Say

Other/unsure

"Wifi system works poorly. Dealer has done little about it. We may drop this Internet later this year."

Anonymous, MD (2021 Toyota Sienna LE 2.5-L 4 Cyl hybrid)

"Water leaking in both sliding side doors. Fix involved complete new sets of water drain seals and realignment of door latch lock brackets on both sliding doors. Major repair that cumulitively we were unable to use our van for approximately 3 months while it was in the shop being fixed. Fortunately was under warranty when discovered so all fixed at no cost to us. All new carpeting and underlayment replaced due to damage. Water was coming in slowly during heavy rain exposure and crossing the threshold seals, making its way underneath the flooring."

Anonymous, WI (2021 Toyota Sienna XLE 2.5-L 4 Cyl hybrid)

"rear lift gate struts dont work replaced a number of times"

Anonymous, AZ (2021 Toyota Sienna Unsure 2.5-L 4 Cyl hybrid)

"Recall for 3rd row seating and for passenger air bag"

Anonymous, OH (2021 Toyota Sienna LE 2.5-L 4 Cyl hybrid)

"Recall on it for a couple years"

Anonymous, IA (2021 Toyota Sienna Unsure 2.5-L 4 Cyl hybrid)

"The bar that opens & closes truck broke suddenly making very difficult to get my dog out of car creating dangerous situation"

Anonymous A., NY (2021 Toyota Sienna XSE 2.5-L 4 Cyl hybrid)

Brakes

Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.

What Owners Say

Other brakes problem

"We have complained to Toyota Dealership in Marietta OH since purchase about going to stop then feeling the van moves or lunges forward with no brakes. They dismiss the problem as unrepeatable. We have traveled 20 feet forward at times going into intersection or stop sign. Eventually MArietta said there was a recall for something similar but it did not resolve the issue. It happens maybe less after the software update but still occurs."

Anonymous A., WV (2021 Toyota Sienna Limited 2.5-L 4 Cyl hybrid)
Pulsation or vibration

"When coming to a stop and the (ESC) is activated the brakes give up momentarily and it is very alarming!"

Anonymous, CA (2021 Toyota Sienna Platinum 2.5-L 4 Cyl hybrid)
Regenerative braking (charges battery when vehicle slows down)

"Marietta Toyota dealer stated the inability to stop problem was part of regenerative braking but unless they see it happen could do nothing to assist. Dealer used to be C&C Toyota then was bought by Victory Toyota who has been less helpful despite our buying an extended warranty from C&C."

Anonymous A., WV (2021 Toyota Sienna Limited 2.5-L 4 Cyl hybrid)

Noises/Leaks

Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.

What Owners Say

Air or water leaks

"sunroof leaks water in heavy rain"

Anonymous, NC (2021 Toyota Sienna Platinum 2.5-L 4 Cyl hybrid)
Squeaks or rattles

"Noise is constant when driving the vehicle. Constant not able to determine the source of the problem. The problem could be the vehicle was converted to handicap accessibility."

Anonymous, NE (2021 Toyota Sienna Platinum 2.5-L 4 Cyl hybrid)

"Underneath the Back seat behind driver makes an annoying squeaking noise on every tiny bump in the road. Dealer said they cant tell what it is without expensive removal and disassembly of the seat. I put a blanket over it to try to muffle the noise."

Anonymous, OH (2021 Toyota Sienna XLE 2.5-L 4 Cyl hybrid)

EV Battery

Electric/hybrid battery pack failure, replacement or malfunction, or cooling.

What Owners Say

Electric/hybrid battery pack replacement

"Light malfunction would go off saying hybrid system malfunction"

Anonymous, NE (2021 Toyota Sienna Platinum 2.5-L 4 Cyl hybrid)

"Main battery went completely dead . Had it towed to dealership Replaced the battery no problems"

Anonymous A., IL (2021 Toyota Sienna XLE 2.5-L 4 Cyl hybrid)

""Unlike a conventional battery, the battery that is linked to the hybrid system died without warning and required a tow.""

Anonymous, DC (2021 Toyota Sienna Limited 2.5-L 4 Cyl hybrid)

Electrical Accessories

Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, USB ports, alarm or security system, remote engine start, heated or cooled seats, heated steering wheel, headlights, automatic headlights, automatic wipers, wireless charging pad.

What Owners Say

12V battery

"Car left for 5 months without driving and battery needed to be replaced."

Anonymous, AZ (2021 Toyota Sienna XLE 2.5-L 4 Cyl hybrid)

"3 times the battery has gone dead!"

Anonymous, CA (2021 Toyota Sienna Platinum 2.5-L 4 Cyl hybrid)

Fuel System/Emissions

Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.

What Owners Say

Sensors (includes O2 or oxygen sensor)

""The check engine light came on repeatedly. We replaced the gas cap based on the code that the car gave us. That worked for a day or so, but the code kept returning. We finally took it to our mechanic and it was determined to be the sensor. The part was over $500. Our mechanic took care of it and we were charged around $500 in labor.""

Anonymous, TX (2021 Toyota Sienna XLE 2.5-L 4 Cyl hybrid)

Body Hardware

Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (power or manual), seat belts, sunroof, convertible top, glass defect.

What Owners Say

Seat controls - manual

"The one of the second row seats doesn't slide forward anymore. The plastic handle detached from the cable that releases the seat. ++++++ Also, the other second row seat doesn't fold forward anymore."

Anonymous, LA (2021 Toyota Sienna LE 2.5-L 4 Cyl hybrid)

Suspension/Steering

Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.

What Owners Say

Shocks or struts

"started around 55000 miles, noise from front passenger strut, needed non-covered replacement. Independent garage could not source parts so had to do job at dealer."

Anonymous, WI (2021 Toyota Sienna XLE 2.5-L 4 Cyl hybrid)

Engine Cooling

Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.

What Owners Say

Overheating

"According to dealer, damage from something entering through the grill caused coolant loss on hybrid system, rendering car unusable."

Anonymous, WI (2021 Toyota Sienna XLE 2.5-L 4 Cyl hybrid)

Engine Minor

Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.

What Owners Say

Other minor engine problem

"Engine block leak"

Anonymous, IL (2021 Toyota Sienna LE 2.5-L 4 Cyl hybrid)

Climate System

AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.

Drive System

Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.

Transmission Major

Transmission rebuild or replacement, torque converter, premature clutch replacement.

Engine Electrical

Alternator, starter, hybrid battery replacement, hybrid battery related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, spark plugs and wires failure, auto stop/start.

Paint/Trim

Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.

Engine Major

Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.

Transmission Minor

Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.

In-car Electronics

Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.

2021 Minivans & 3-Row SUVs Reliability

This Car
vs. Similar Cars

Toyota vs. Other New Car Brands Reliability

Reliability History
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Overall Reliability Verdict
POTENTIAL TROUBLE SPOTS
Powertrain
Electric Motor
EV Battery
Engine Major
Engine Minor
Engine Cooling
Engine Electrical
Transmission Major
Transmission Minor
Drive System
Fuel System/Emissions
Exhaust
Suspension/Steering
Brakes
Climate System
Build Quality
Electrical Accessories
Body Hardware
Paint/Trim
Noises/Leaks
In-car Electronics
Reliability indicates how models have performed in the past, providing the basis for predicting how the vehicles will hold up in the year ahead. These charts provide the most comprehensive reliability information available to consumers. Based on information received from our latest subscriber survey for about 380,000 vehicles, our reliability history charts give you a rundown on how 2000 through 2025 vehicles are holding up in 20 potential trouble spots, ranging from the engine, transmission, electric motor, EV charging, and brakes, to power equipment and the electrical accessories.
Recalls
PROVIDED BY
EQUIPMENT ADAPTIVE/MOBILITY
Dec 17, 2025
An unsecured wheelchair can move during transit, increasing the risk of injury.
Summary:
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.
What should you do:
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.
For more information:
NHTSA CAMPAIGN ID Number: 25V877000
Potential Number of Units Affected: 1019
SEATS
Feb 13, 2025
An improperly tightened seatback may not adequately restrain the occupant during a crash, increasing their risk of injury.
Summary:
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."
What should you do:
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.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 888-327-4236 (TTY 888-275-9171) or go to nhtsa.gov.
NHTSA CAMPAIGN ID Number: 25V086000
Potential Number of Units Affected: 167802
AIR BAGS
Dec 20, 2023
An air bag that does not deploy during a crash increases the risk of injury.
Summary:
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.
What should you do:
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.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
NHTSA CAMPAIGN ID Number: 23V865000
Potential Number of Units Affected: 999901
ELECTRONIC STABILITY CONTROL (ESC)
Apr 13, 2022
Driving with a deactivated stability control system increases the risk of a crash.
Summary:
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."
What should you do:
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.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
NHTSA CAMPAIGN ID Number: 22V239000
Potential Number of Units Affected: 458110
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