226 problems have been reported for the 2009 Subaru Forester. The following chart shows the 21 most common problems for 2009 Subaru Forester. The number one most common problem is related to the vehicle's air bags with 39 problems. The second most common problem is related to the vehicle's engine and engine cooling (39 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 Subaru Forester in the United States are 88,759 units [1]. If the total number of problems reported by Subaru Forester owners in the last 16 years is 226, and the age of the vehicle is 16, the PPMY index can then be calculated as
PPMY Index = 226 / 88,759 / 16 * 1000 = 0.16.
For more information, refer to this page: A study of reliability comparison across Subaru Forester model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2009 Subaru Forester 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 Subaru Forester, the following table can be used to compare the 2009 Subaru Forester with the Subaru Forester from other model years. Note that the number of problems reported for the 2009 Forester is 226 while the average number of problems reported for the 28 model years of the Subaru Forester is 279.