2023 Toyota Sienna Hybrid Transmission and drivetrain Problems
- Complaints
- 4about this part
- Share
- 6%of 71 total for the year
- Median mileage
- 44,242miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 4 complaints about the transmission and drivetrain of the 2023 Toyota Sienna Hybrid, 6% of the 71 complaints for this model year. Where a mileage was given, the median is 44,242 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2023 Toyota Sienna Hybrid. The contact stated while driving and depressing the brake pedal to come to a stop, the vehicle jolted. The vehicle was taken to the dealer, where the contact was informed that the vehicle was operating as designed. Additionally, the contact stated that upon starting the vehicle, the messages Parking Brake Malfunction , Parking Brake Unavailable and Door Ajar were displayed. The gear shift indicator light and the parking brake warning light were illuminated. …”
NHTSA complaint #11669159, filed 2025-06, 44,242 miles“while braking and coming to a stop the van surges forward (while brakes are being applied). This has nearly caused accidents on 2 occasions, and has happened 2 other times in the past few months”
NHTSA complaint #11735743, filed 2026-05“We had a hybrid system malfunction warning on the dashboard and the van slowed down to 20 mph on a climb. With the flow of traffic at 50mph on a two lane road and no shoulder to pull off, this cause a serious risk to us and other drivers. Stopping and starting the car several times did not cause the warning to go away and the owner's manual says to stop driving. There were no warning lights prior to this happening. The warning and the MIL came on at the same time as the van started slowing. The local dealer now has the van and are not able to exactly diagnose the problem. …”
NHTSA complaint #11523323, filed 2023-05Transmission and drivetrain: other model years
Other parts of the 2023 Toyota Sienna Hybrid
28 complaintsOther or unknown
16 complaintsElectrical system
8 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsAir bags
4 complaintsSeat belts
4 complaintsSeats
3 complaintsBody and structure
3 complaintsVehicle speed control
2 complaintsForward collision avoidance
1 complaintsLatches, locks and linkages
1 complaintsSteering
1 complaints
← All problems reported for the 2023 Toyota Sienna Hybrid
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology