37 problems have been reported for the 2005 Lexus RX. The following chart shows the 15 most common problems for 2005 Lexus RX. The number one most common problem is related to the vehicle's equipment with 6 problems. The second most common problem is related to the vehicle's air bags (5 problems).
| Problem Category | Number of Problems |
|---|---|
| Equipment | |
| Air Bag | |
| Service Brakes | |
| Power Train | |
| Steering | |
| Exterior Lighting | |
| Vehicle Speed Control | |
| Other Fuel System | |
| Electrical System | |
| Wheel | |
| Structure | |
| Engine And Engine Cooling | |
| Latches/locks/linkage | |
| Seat Belt |
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 2005 Lexus RX in the United States are 96,140 units [1]. If the total number of problems reported by Lexus RX owners in the last 20 years is 37, and the age of the vehicle is 20, the PPMY index can then be calculated as
PPMY Index = 37 / 96,140 / 20 * 1000 = 0.02.
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 2005 Lexus RX in 2005.
| Service Year | Number of Problems |
|---|---|
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 | |
| 2008 | |
| 2007 | |
| 2006 | |
| 2005 |
When making the decision between buying a new or used Lexus RX, the following table can be used to compare the 2005 Lexus RX with the Lexus RX from other model years. Note that the number of problems reported for the 2005 RX is 37 while the average number of problems reported for the 27 model years of the Lexus RX is 39.