870 problems have been reported for the 2015 Subaru Forester. The following chart shows the 23 most common problems for 2015 Subaru Forester. The number one most common problem is related to the vehicle's engine and engine cooling with 129 problems. The second most common problem is related to the vehicle's air bags (100 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 2015 Subaru Forester in the United States are 224,272 units [1]. If the total number of problems reported by Subaru Forester owners in the last 11 years is 870, and the age of the vehicle is 11, the PPMY index can then be calculated as
PPMY Index = 870 / 224,272 / 11 * 1000 = 0.35.
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 2015 Subaru Forester in 2015.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 |
When making the decision between buying a new or used Subaru Forester, the following table can be used to compare the 2015 Subaru Forester with the Subaru Forester from other model years. Note that the number of problems reported for the 2015 Forester is 870 while the average number of problems reported for the 29 model years of the Subaru Forester is 286.