111 problems have been reported for the 2009 Toyota Avalon. The following chart shows the 15 most common problems for 2009 Toyota Avalon. The number one most common problem is related to the vehicle's exterior lighting with 25 problems. The second most common problem is related to the vehicle's vehicle speed control (17 problems).
In our research we use the PPMY index to compare the reliability of vehicles. The PPMY index of a certain model is defined as the problems reported per thousand vehicles per Year. The total sales of the 2009 Toyota Avalon in the United States are 22,030 units [1]. If the total number of problems reported by Toyota Avalon owners in the last 16 years is 111, and the age of the vehicle is 16, the PPMY index can then be calculated as
PPMY Index = 111 / 22,030 / 16 * 1000 = 0.31.
For more information, refer to this page: A study of reliability comparison across Toyota Avalon model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2009 Toyota Avalon in 2009.
| Service Year | Number of Problems |
|---|---|
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 |
When making the decision between buying a new or used Toyota Avalon, the following table can be used to compare the 2009 Toyota Avalon with the Toyota Avalon from other model years. Note that the number of problems reported for the 2009 Avalon is 111 while the average number of problems reported for the 27 model years of the Toyota Avalon is 150.