32 problems have been reported for the 2018 Lexus RX. The following chart shows the 13 most common problems for 2018 Lexus RX. The number one most common problem is related to the vehicle's equipment with 7 problems. The second most common problem is related to the vehicle's service brakes, hydraulic (6 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 2018 Lexus RX in the United States are 74,748 units [1]. If the total number of problems reported by Lexus RX owners in the last 8 years is 32, and the age of the vehicle is 8, the PPMY index can then be calculated as
PPMY Index = 32 / 74,748 / 8 * 1000 = 0.05.
For more information, refer to this page: A study of reliability comparison across Lexus RX model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2018 Lexus RX in 2018.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 |
When making the decision between buying a new or used Lexus RX, the following table can be used to compare the 2018 Lexus RX with the Lexus RX from other model years. Note that the number of problems reported for the 2018 RX is 32 while the average number of problems reported for the 27 model years of the Lexus RX is 44.