148 problems have been reported for the 2021 Acura RDX. The following chart shows the 20 most common problems for 2021 Acura RDX. The number one most common problem is related to the vehicle's equipment with 28 problems. The second most common problem is related to the vehicle's engine and engine cooling (18 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 Acura RDX in the United States are 73,283 units [1]. If the total number of problems reported by Acura RDX owners in the last 5 years is 148, and the age of the vehicle is 5, the PPMY index can then be calculated as
PPMY Index = 148 / 73,283 / 5 * 1000 = 0.40.
For more information, refer to this page: A study of reliability comparison across Acura RDX model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2021 Acura RDX in 2021.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 |
When making the decision between buying a new or used Acura RDX, the following table can be used to compare the 2021 Acura RDX with the Acura RDX from other model years. Note that the number of problems reported for the 2021 RDX is 148 while the average number of problems reported for the 19 model years of the Acura RDX is 135.