22 problems have been reported for the 2021 Porsche Cayenne. The following chart shows the 10 most common problems for 2021 Porsche Cayenne. The number one most common problem is related to the vehicle's electrical system with 5 problems. The second most common problem is related to the vehicle's equipment (4 problems).
| Problem Category | Number of Problems |
|---|---|
| Electrical System | |
| Equipment | |
| Air Bag | |
| Power Train | |
| Service Brakes | |
| Engine And Engine Cooling | |
| Back Over Prevention | |
| Steering | |
| Visibility | |
| Forward Collision Avoidance |
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 Porsche Cayenne in the United States are 13,536 units [1]. If the total number of problems reported by Porsche Cayenne owners in the last 5 years is 22, and the age of the vehicle is 5, the PPMY index can then be calculated as
PPMY Index = 22 / 13,536 / 5 * 1000 = 0.33.
For more information, refer to this page: A study of reliability comparison across Porsche Cayenne model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2021 Porsche Cayenne in 2021.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 |
When making the decision between buying a new or used Porsche Cayenne, the following table can be used to compare the 2021 Porsche Cayenne with the Porsche Cayenne from other model years. Note that the number of problems reported for the 2021 Cayenne is 22 while the average number of problems reported for the 24 model years of the Porsche Cayenne is 35.