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product.specifications
specs.g_fuel_economy
specs.city_mpg36
specs.highway_mpg36
specs.combined_mpg36
specs.annual_fuel_cost$1900
specs.ghg_score7 / 10
specs.g_engine_drivetrain
specs.engine_size2.5 L
specs.cylinders4
specs.fuel_typeRegular
specs.transmissionAutomatic (AV-S6)
specs.drivetrainFront-Wheel Drive
CO₂246 g/mi
specs.g_classification
specs.vehicle_classMinivan - 2×2
specs.typeHybrid
specs.data_sourced_from FuelEconomy.gov (specs.energy_dept)
product.complaints_section18 total
TOYOTA SIENNA HYBRID 2024 POWER TRAIN
mediumI am the original owner of a 2024 Toyota Sienna Hybrid (VIN: [XXX]). The vehicle has required two significant engine repairs within the first 57,000 miles of ownership. Both repairs were performed at authorized Toyota dealerships under warranty. INCIDENT 1 â ENGINE REPLACEMENT (10,000 MILES): At approximately 10,000 miles, the engine developed severe knocking. The dealership determined the engine was defective and performed a complete engine replacement under warranty. INCIDENT 2 â OIL LEAK (57,000 MILES): At approximately 57,000 miles, the engine developed an oil leak between the oil pan and the timing belt cover. The dealership repaired the leak under warranty. The dealership informed me that this repair carries only a one-year warranty on the work performed. The fact that the engine required complete replacement at only 10,000 miles indicates a manufacturing defect. The second engine issue at 57,000 miles suggests a pattern of powertrain reliability problems. I contacted the Toyota Brand Engagement Center (Case #XXX) and spoke with both an advocate and a supervisor. Toyota declined to offer any extended powertrain coverage and would only agree to review future issues on a "case-by-case basis." I am concerned about the safety and long-term reliability of this vehicle's powertrain given the recurring nature of these engine failures. A complete engine failure at 10,000 miles on a brand-new vehicle is not normal wear and tear â it is a defect. I am reporting this so that NHTSA is aware of potential systemic engine issues with the 2024 Toyota Sienna Hybrid. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
TOYOTA SIENNA HYBRID 2024 VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR
mediumThe driver's side mirror vibrates when the vehicle is at speed. I've been to two dealers who say that it's normal, and everything is intact and installed correctly. When driving, the mirror vibrates a lot, which is a safety issue when trying to use the side mirror during changes, etc.
TOYOTA SIENNA HYBRID 2024 POWER TRAIN
mediumThe contact owns a 2024 Toyota Sienna. While the contactâs wife was driving 5 MPH out of a parking lot and attempting to make a left turn, the vehicle suddenly lost motive power and stalled. After approximately 3- 4 seconds while depressing the accelerator pedal several times, the vehicle eventually accelerated as needed. The vehicle was driven to the residence. There were no warning lights illuminated. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was 68,000.
TOYOTA SIENNA HYBRID 2024 SEATS
highWhen a lever is pulled, the second row seat can move freely back and forth on a track until the back of the seat is returned to the upright position. I was driving at highway speeds and had to brake suddenly. The seat was at the back of the track with the lever pulled, and it slammed into the back of the driver seat, hurting my back. It stuck there putting pressure on the seat (which could be felt) until I stopped and had to use force to make it slide back.
TOYOTA SIENNA HYBRID 2024 STRUCTURE:BODY
highThe driver side power sliding door failed to detect my [XXX] and ended up squishing it and we struggled for over a minute for the door to open. I have a video of the incident as it was captured by our security cameras, but I cannot upload it here. This was no the first time the doors have failed to detect someone. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
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product.status_history
status.certified→status.safe11 Jun 2026
Lemon Score: 89. 16 data points. v3 scoring.
status.uncertain→status.certified31 May 2026
Lemon Score: 97. 2 data points. v3 scoring.