2021 Toyota Avalon problems & reliability
21 owner complaints filed with NHTSA for the 2021 Toyota Avalon, alongside 2 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
Federal crash records (FARS 2020–2023): 2021 Toyota Avalon vehicles were involved in 9 fatal crashes with 3 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Air Bags → | 12 | 57% |
| Engine | 4 | 19% |
| Vehicle Speed Control | 3 | 14% |
| Forward Collision Avoidance | 2 | 10% |
| Service Brakes | 2 | 10% |
| Back Over Prevention | 1 | 5% |
| Electrical System | 1 | 5% |
| Power Train | 1 | 5% |
| Seat Belts | 1 | 5% |
| Tires | 1 | 5% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Complaints by incident year
What owners report
“We have received a recall for the sensors and airbag on our car back in December of 2023. Every time we call the dealership they tell us they can't get a send because the parts are not available. I cannot seem to get any movement with this. I've tried to contacting Toyota corporate but their website leaves much to be…”
Air Bags · filed Apr 9, 2026
“The contact owns a 2021 Toyota Avalon. 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 air bag warning light was intermittently illuminated. The local dealer was contacted. The contact stated…”
Air Bags · filed Nov 14, 2025
“There is no remedy available to fix the OCS sensor in front passenger seat of our 2021 Toyota Avalon. We are scared to drive it. What are our options since Toyota will not help.”
Air Bags · filed Aug 5, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
169 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2021 Toyota Avalon. The 10 most recent:
OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.
T-SB-0104-21 Rev2 · Service Bulletin/Repair Instructions · issued Feb 27, 2026
OBSOLETE NOTICE January 30, 2026: This bulletin is now obsolete. Please see T-SB-0001-26.
T-SB-0106-22 Rev2 · Service Bulletin/Repair Instructions · issued Jan 30, 2026
Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software.
T-SB-0001-26 · Service Bulletin/Repair Instructions · issued Jan 28, 2026
Some 2005 – 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The…
T-SB-0055-24 Rev2 · Service Bulletin/Repair Instructions · issued Jan 7, 2026
The specific condition covered by this program is for a small engine coolant leak that can occur from the flow shut-off valve that can allow coolant to drip on other parts of the vehicle. This can cause "Engine…
24TE04 · Service Campaign · issued Aug 7, 2025
Some 2021 – 2022 model year Avalon, 2018 – 2024 Camry, 2019 – 2025 model year Corolla, 2022 – 2025 model year Corolla Cross, and 2019 – 2025 model year RAV4 vehicles with A25A-FKS and M20A-FKS engines may have a MIL ON…
T-SB-0010-24 Rev2 · Service Bulletin/Repair Instructions · issued Jun 25, 2025
Some 2018 – 2021 model year Toyota vehicles equipped with an A25A-FKS, A25A-FXS, or M20A-FKS engine may exhibit a condition in which an “Engine Maintenance Required” message is displayed in the Multi-Information Display…
T-SB-0112-24 Rev2 · Service Bulletin/Repair Instructions · issued Jun 19, 2025
The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and…
T-SB-0058-23 Rev1 · Service Campaign · issued Jun 13, 2025
To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system…
T-TT-0780-25 · Service Bulletin/Repair Instructions · issued Apr 2, 2025
Some 2021 model year Avalon, 2020 – 2022 model year Camry, and 2019 – 2022 model year RAV4 vehicles equipped with an A25A-FKS engine may exhibit reduced engine power and/or a MIL ON condition with one or more of the…
T-SB-0005-24 Rev2 · Service Bulletin/Repair Instructions · issued Apr 2, 2025
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2021 Toyota Avalon has 2 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2021 Toyota Avalon?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.