668 problems have been reported for the 2010 Chevrolet HHR. The following chart shows the 22 most common problems for 2010 Chevrolet HHR. The number one most common problem is related to the vehicle's steering with 231 problems. The second most common problem is related to the vehicle's electrical system (108 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 2010 Chevrolet HHR in the United States are 64,735 units [1]. If the total number of problems reported by Chevrolet HHR owners in the last 16 years is 668, and the age of the vehicle is 16, the PPMY index can then be calculated as
PPMY Index = 668 / 64,735 / 16 * 1000 = 0.64.
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 2010 Chevrolet HHR in 2010.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
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| 2015 | |
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| 2013 | |
| 2012 | |
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| 2010 |
When making the decision between buying a new or used Chevrolet HHR, the following table can be used to compare the 2010 Chevrolet HHR with the Chevrolet HHR from other model years. Note that the number of problems reported for the 2010 HHR is 668 while the average number of problems reported for the 9 model years of the Chevrolet HHR is 496.