Toyota Sienna - Problems, Statistics, and Analysis

Toyota Sienna owners have reported a total of 11,159 problems for their cars built in the 30 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the Toyota Sienna. The 2004 Toyota Sienna cars have the most problems reported (2,542 problems).

🔍 Common problems of Toyota Sienna

The following chart shows the 38 most common problems for Toyota Sienna cars. The number one most common problem is related to the vehicle's structure (2,505 problems). The second most common problem is related to the vehicle's equipment (916 problems).

📉 Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Toyota Sienna of an older model year to newer model years since older vehicles have been in service longer and thus are expected to have more problems. In order to compare the reliability across Sienna model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index indicates greater reliability of the given model year cars.

    PPMY = P / S / Y * 1000,

where P = total problems reported during the life of a Toyota Sienna model year; S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).

The results are shown in Table 3.

📊 Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the Toyota Sienna is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.

Switch Model: 4Runner Avalon Avalon Hybrid Camry Camry Hybrid Celica Corolla Echo FJ Cruiser Highlander Highlander Hybrid Land Cruiser Matrix MR2 Pickup Prerunner Previa Prius RAV4 Scion Tc Scion Xa Scion Xb Scion Xd Sequoia Sienna T100 Tacoma Tercel Toyota Truck Tundra Venza Yaris

Select Model Year: Year:2025 Sienna 2024 Sienna 2023 Sienna 2022 Sienna 2021 Sienna 2020 Sienna 2019 Sienna 2018 Sienna 2017 Sienna 2016 Sienna 2015 Sienna 2014 Sienna 2013 Sienna 2012 Sienna 2011 Sienna 2010 Sienna 2009 Sienna 2008 Sienna 2007 Sienna 2006 Sienna 2005 Sienna 2004 Sienna 2003 Sienna 2002 Sienna 2001 Sienna 2000 Sienna 1999 Sienna 1998 Sienna 1997 Sienna 1996 Sienna

☘ Sienna Service Bulletins

⚑ Sienna Safety Recalls

☤ Sienna Defect Investigations

Compare Reliability: Select vehicle 1: Ford F-150 Chrysler Town & Country Chrysler Pacifica Dodge Grand Caravan Ford Windstar Honda Odyssey Toyota Sienna Toyota Tundra Toyota Tacoma Select vehicle 2: Ford F-150 Chrysler Town & Country Chrysler Pacifica Dodge Grand Caravan Ford Windstar Honda Odyssey Toyota Sienna Toyota Tundra Toyota Tacoma                            Compare