676 problems have been reported for the 2009 Chevrolet HHR. The following chart shows the 23 most common problems for 2009 Chevrolet HHR. The number one most common problem is related to the vehicle's electrical system with 131 problems. The second most common problem is related to the vehicle's steering (128 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 Chevrolet HHR in the United States are 80,781 units [1]. If the total number of problems reported by Chevrolet HHR owners in the last 16 years is 676, and the age of the vehicle is 16, the PPMY index can then be calculated as
PPMY Index = 676 / 80,781 / 16 * 1000 = 0.52.
For more information, refer to this page: A study of reliability comparison across Chevrolet HHR model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2009 Chevrolet HHR in 2009.
| Service Year | Number of Problems |
|---|---|
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
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| 2014 | |
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| 2012 | |
| 2011 | |
| 2010 | |
| 2009 |
When making the decision between buying a new or used Chevrolet HHR, the following table can be used to compare the 2009 Chevrolet HHR with the Chevrolet HHR from other model years. Note that the number of problems reported for the 2009 HHR is 676 while the average number of problems reported for the 9 model years of the Chevrolet HHR is 493.