87 problems have been reported for the 2021 Volkswagen Jetta. The following chart shows the 17 most common problems for 2021 Volkswagen Jetta. The number one most common problem is related to the vehicle's service brakes, hydraulic with 23 problems. The second most common problem is related to the vehicle's electrical system (11 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 Volkswagen Jetta in the United States are 59,335 units [1]. If the total number of problems reported by Volkswagen Jetta owners in the last 5 years is 87, and the age of the vehicle is 5, the PPMY index can then be calculated as
PPMY Index = 87 / 59,335 / 5 * 1000 = 0.29.
For more information, refer to this page: A study of reliability comparison across Volkswagen Jetta model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2021 Volkswagen Jetta in 2021.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 |
When making the decision between buying a new or used Volkswagen Jetta, the following table can be used to compare the 2021 Volkswagen Jetta with the Volkswagen Jetta from other model years. Note that the number of problems reported for the 2021 Jetta is 87 while the average number of problems reported for the 31 model years of the Volkswagen Jetta is 414.