product.specifications
specs.g_fuel_economy
specs.city_mpg35
specs.highway_mpg36
specs.combined_mpg35
specs.annual_fuel_cost$1950
specs.ghg_score7 / 10
specs.g_engine_drivetrain
specs.engine_size2.5 L
specs.cylinders4
specs.fuel_typeRegular
specs.transmissionAutomatic (AV-S6)
specs.drivetrainAll-Wheel Drive
CO₂253 g/mi
specs.g_classification
specs.vehicle_classMinivan - 4×4
specs.typeHybrid
specs.data_sourced_from FuelEconomy.gov (specs.energy_dept)
product.complaints_section18 total
TOYOTA SIENNA HYBRID 2024 UNKNOWN OR OTHER
lowWhile applying the brake at the stop light. (25 to30 mile speed limit zone) The Toyota hybrid sienna start to accelerate for split 5 or more seconds. I have to apply the brake harder even though I was already applying the brake to slow down because the light was red and the are several cars in front of me. For the first time I was scared thinking about rear ending some one in front of me or the Toyota Lexus incident where it accelerated and everyone died flashing through my mind. It was not a good feeling.
TOYOTA SIENNA HYBRID 2024 ENGINE
mediumWhat component or system failed or malfunctioned, and is it available for inspection upon request? -The engine malfunctioned. It is available for inspection. How was your safety or the safety of others put at risk? -The engine went out at 77k miles in the middle of driving with no warning. Could have caused a serious accident. We have always done proper oil changes. The rods separated from the pistons and punched a hole in the engine block. Has the problem been reproduced or confirmed by a dealer or independent service center? The dealer diagnosed it and our mechanic said this has happened with Toyotas too recently Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? -no Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? -no warnings or messages before the failure of the engine.
TOYOTA SIENNA HYBRID 2024 FORWARD COLLISION AVOIDANCE
highThe contact owns a 2024 Toyota Sienna. The contact stated that while approaching a stop light and pressing the brake pedal the vehicle crashed into the rear of a second vehicle. During the crash the collision avoidance system did not activate and no air bags had deployed. No injuries were reported. A police report was taken at the scene.. The failure mileage was 25,000.
TOYOTA SIENNA HYBRID 2024 SEATS
highI notice the driver seat had a clip that popped off unto my carpet, when inspected it came off the seat rail. While moving my seat back using the electronic seat lever a white clip with two metal bearings was sticking out, I notice the ball bearings were not in place and had came off the white clip. Yes, it is available for inspection. This pose a safety concern as the seat rails will not function correctly when moving seat or using the memory seat buttons for each driver. I have not brought the vehicle to a dealer to inspect as there is a estimate fee involved. I am currently out of my 2 year toyota care warranty. I am not seeing any warning lamps or messages besides the seat making a clicking noise when I move the seat back and forth.
TOYOTA SIENNA HYBRID 2024 UNKNOWN OR OTHER
lowStepping on brakes - Car slows then accelerates a few seconds and lunges forward a couple of feet. Extreme safety issue. This occurred yesterday with my sister in the car and we almost rear ended the vehicle stopped in front of us. I have complained to the Cumberland Toyota dealership in the past and was told if they cant recreate the issue and it doesn't happen all the time there is no way to fix the issue. Yesterday I was almost in an accident because of this faulty design/anomaly associated with my car. This lunging forward is not suppose to happen and I want it fixed Toyota needs to come up with a resolution before it kills me. I have purchased this vehicle new 2024 and it has been happening since purchase - NOW its really bad
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product.no_discussion
product.status_history
status.certified→status.safe7 Jun 2026
Lemon Score: 89. 15 data points. v3 scoring.
status.uncertain→status.certified31 May 2026
Lemon Score: 92. 9 data points. v3 scoring.