420 problems have been reported for the 2021 Kia Motor Sorento. The following chart shows the 17 most common problems for 2021 Kia Motor Sorento. The number one most common problem is related to the vehicle's power train with 147 problems. The second most common problem is related to the vehicle's engine and engine cooling (83 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 Kia Motor Sorento in the United States are 62,102 units [1]. If the total number of problems reported by Kia Motor Sorento owners in the last 5 years is 420, and the age of the vehicle is 5, the PPMY index can then be calculated as
PPMY Index = 420 / 62,102 / 5 * 1000 = 1.35.
For more information, refer to this page: A study of reliability comparison across Kia Motor Sorento model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2021 Kia Motor Sorento in 2021.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 |
When making the decision between buying a new or used Kia Motor Sorento, the following table can be used to compare the 2021 Kia Motor Sorento with the Kia Motor Sorento from other model years. Note that the number of problems reported for the 2021 Sorento is 420 while the average number of problems reported for the 24 model years of the Kia Motor Sorento is 591.