2019 Toyota Prius Reliability Score & Common Problems

Owners of the 2019 Toyota Prius report that airbags frequently fail to deploy during crashes. Complaints describe situations where the vehicle is involved in both frontal and side collisions, yet airbags do not activate, even when significant vehicle damage occurs. In two instances, owners mention that the lack of airbag deployment coincides with brake system failures, including unintended acceleration and delayed stopping distances. Injuries are reported in two of the four crashes detailed. These issues are noted at varying mileages, with one specific report at approximately 78,000 miles. Safety implications are evident, as all complaints involve crashes, underscoring potential risks for used car buyers considering this model.

Owners of the 2019 Toyota Prius report issues related to tire integrity and pressure, with several complaints describing unexpected blowouts and a lack of warning from tire pressure monitoring systems. Symptoms include a wobbling sensation while driving and sudden loss of tire pressure, often without any prior alert, leading to instability and potential loss of control. These issues are noted at varying mileages, from as low as 7,014 miles to over 44,000 miles. Additionally, owners express concern about the absence of a spare tire, which they find problematic in situations where the provided repair kit is inadequate. Safety implications are significant, as multiple reports involve loss of vehicle control, though no injuries are detailed.

Owners of the 2019 Toyota Prius report issues related to vehicle speed control, with complaints frequently mentioning sudden unintended acceleration and complete loss of power. One owner describes an incident where applying the brake resulted in unexpected acceleration, leading to a minor crash with another vehicle while parking. Another owner reports a sudden stop from freeway speeds without warning, followed by a temporary inability to accelerate. Additionally, there are reports of dashboard failures, including loss of all indicators and controls, occurring at very low mileage. These issues present potential safety concerns, including loss of control and collision risk.

Owners of the 2019 Toyota Prius frequently report issues with the factory-installed tires, specifically Dunlop Enasave and Toyo NanoEnergy models. Common symptoms include noticeable vibrations or "warbling" while driving, with inspections revealing significant tire degradation such as exposed steel belting and tread separation. These issues typically arise around 27,000 to 44,000 miles. Safety implications are evident, as one owner experienced a tire blowout at highway speeds, though no crashes or injuries are reported. Buyers should be aware of potential premature tire wear and consider inspecting or replacing tires if purchasing a used model with similar mileage.

Owners report issues with the power train of the 2019 Toyota Prius, particularly involving the exhaust heat-exchanger coolant pipe and the pre-collision system. Symptoms include a complete loss of coolant leading to potential engine overheating, power reduction, or shutdown, with one owner noting the coolant reservoir was found empty after warning lights flashed intermittently. Another owner describes a loud cranking noise from the engine and a missing pre-collision system sensor shortly after purchase. These issues occur at various timelines, with one owner experiencing problems within a month of ownership. Safety implications include the risk of engine shutdown while driving, which could endanger occupants and other road users, particularly during highway travel or intersection turns.