2024 Toyota Sienna Reliability Score & Common Problems

Owners of the 2024 Toyota Sienna report issues with unintended acceleration and throttle response problems, particularly at low speeds. Complaints frequently mention the vehicle surging forward when brakes are applied, with one owner experiencing a crash as a result. Another common issue involves the forward collision avoidance system potentially cutting off throttle control, leaving the vehicle unresponsive in traffic. These problems are noted by owners with approximately 11,000 miles on their vehicles, and no warning messages or lights are typically displayed. Safety implications include the risk of crashes and loss of control, which are significant for potential buyers to consider.

Owners of the 2024 Toyota Sienna report issues primarily with the trunk and sliding doors. Commonly described symptoms include the trunk door failing to close properly, randomly opening, and requiring manual force to shut, with some owners mentioning a screeching sound. One owner reports that the lift gate strut bent and exploded, posing a potential safety risk, while another owner describes a power sliding door failing to detect an obstruction, resulting in an injury. These issues are noted from the time of purchase and persist over extended periods, with some owners experiencing them across multiple service visits. Safety implications include the risk of injury from door malfunctions and exploding components.

Owners of the 2024 Toyota Sienna report issues primarily related to tire integrity. Complaints frequently mention sidewall bulging in Firestone Destination LE3 tires (size P235/65R17), with multiple tires reportedly developing noticeable bulges shortly after installation. This problem has been confirmed by several service centers and affects both the original and replacement sets. Another owner reports a low tire pressure warning, which was attributed to possible weather influences, occurring at approximately 17,826 miles. The sidewall bulging presents a risk of sudden tire failure and potential loss of vehicle control, though no incidents of crashes or loss of control have been reported. Used car buyers should be aware of these tire-related issues when considering this model.

Owners of the 2024 Toyota Sienna report issues related to engine performance. One owner describes the vehicle unexpectedly stopping for 2-3 seconds while driving in city conditions, with the power returning after repeated pressing of the gas pedal. This issue has occurred multiple times. Another owner mentions the need for a complete engine replacement due to an unspecified appearance-related issue, expressing concerns about potential depreciation. These complaints occur within the first few months of ownership, but no specific mileage is provided. No crashes, fires, or loss of control are reported in these instances.

Owners report issues with the 2024 Toyota Sienna's power train, particularly involving a temporary loss of throttle response. Complaints frequently mention that when attempting to accelerate from a stop or low speed, the vehicle does not respond to the accelerator pedal for 2-3 seconds. This symptom occurs without any warning lights on the dashboard. The issues are noted in vehicles with varying mileage, including one report at 68,000 miles. The lack of immediate acceleration poses a potential safety risk, especially in situations involving oncoming traffic.

Owners of the 2024 Toyota Sienna report issues with the driver-side exterior mirror wobbling, particularly noticeable on bumpy roads and at highway speeds. This wobbling results in distorted images, making it challenging to assess surrounding traffic, and is exacerbated at night or in rainy conditions due to blurred lights. Some owners have had replacement mirrors installed, but the issue persists, and dealerships often describe the movement as normal. Additionally, one owner notes a wavy appearance in the vehicle's windshield, affecting visibility. These complaints typically arise at low mileage, with one vehicle reported at 6,500 miles. Safety implications include potential difficulty in maintaining awareness of surrounding vehicles, but no crashes or loss of control are reported.