168 problems have been reported for the 2021 Chevrolet Blazer. The following chart shows the 20 most common problems for 2021 Chevrolet Blazer. The number one most common problem is related to the vehicle's electrical system with 34 problems. The second most common problem is related to the vehicle's engine and engine cooling (32 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 2021 Chevrolet Blazer in the United States are 81,423 units [1]. If the total number of problems reported by Chevrolet Blazer owners in the last 5 years is 168, and the age of the vehicle is 5, the PPMY index can then be calculated as
PPMY Index = 168 / 81,423 / 5 * 1000 = 0.41.
For more information, refer to this page: A study of reliability comparison across Chevrolet Blazer model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2021 Chevrolet Blazer in 2021.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 |
When making the decision between buying a new or used Chevrolet Blazer, the following table can be used to compare the 2021 Chevrolet Blazer with the Chevrolet Blazer from other model years. Note that the number of problems reported for the 2021 Blazer is 168 while the average number of problems reported for the 21 model years of the Chevrolet Blazer is 260.
| Model Year | Number of Problems |
|---|---|
| 2026 Blazer | |
| 2025 Blazer | |
| 2024 Blazer | |
| 2023 Blazer | |
| 2022 Blazer | |
| 2021 Blazer | |
| 2020 Blazer | |
| 2019 Blazer | |
| 2008 Blazer | |
| 2007 Blazer | |
| 2006 Blazer | |
| 2005 Blazer | |
| 2004 Blazer | |
| 2003 Blazer | |
| 2002 Blazer | |
| 2001 Blazer | |
| 2000 Blazer | |
| 1999 Blazer | |
| 1998 Blazer | |
| 1997 Blazer | |
| 1996 Blazer |