288 problems have been reported for the 2011 Chevrolet HHR. The following chart shows the 20 most common problems for 2011 Chevrolet HHR. The number one most common problem is related to the vehicle's fuel system, other with 43 problems. The second most common problem is related to the vehicle's electrical system (38 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 2011 Chevrolet HHR in the United States are 68,455 units [1]. If the total number of problems reported by Chevrolet HHR owners in the last 15 years is 288, and the age of the vehicle is 15, the PPMY index can then be calculated as
PPMY Index = 288 / 68,455 / 15 * 1000 = 0.28.
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 2011 Chevrolet HHR in 2011.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
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| 2018 | |
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| 2012 | |
| 2011 |
When making the decision between buying a new or used Chevrolet HHR, the following table can be used to compare the 2011 Chevrolet HHR with the Chevrolet HHR from other model years. Note that the number of problems reported for the 2011 HHR is 288 while the average number of problems reported for the 9 model years of the Chevrolet HHR is 495.