43 problems have been reported for the 2009 Lexus RX. The following chart shows the 13 most common problems for 2009 Lexus RX. The number one most common problem is related to the vehicle's engine and engine cooling with 11 problems. The second most common problem is related to the vehicle's equipment (10 problems).
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling | |
| Equipment | |
| Steering | |
| Air Bag | |
| Electrical System | |
| Tire | |
| Vehicle Speed Control | |
| Structure | |
| Service Brakes | |
| Power Train | |
| Seats | |
| Other Fuel System | |
| Unknown Or Other |
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 2009 Lexus RX in the United States are 64,206 units [1]. If the total number of problems reported by Lexus RX owners in the last 17 years is 43, and the age of the vehicle is 17, the PPMY index can then be calculated as
PPMY Index = 43 / 64,206 / 17 * 1000 = 0.04.
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 2009 Lexus RX in 2009.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 |
When making the decision between buying a new or used Lexus RX, the following table can be used to compare the 2009 Lexus RX with the Lexus RX from other model years. Note that the number of problems reported for the 2009 RX is 43 while the average number of problems reported for the 27 model years of the Lexus RX is 42.