300 problems have been reported for the 2005 Toyota Avalon. The following chart shows the 23 most common problems for 2005 Toyota Avalon. The number one most common problem is related to the vehicle's vehicle speed control with 70 problems. The second most common problem is related to the vehicle's steering (42 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 2005 Toyota Avalon in the United States are 57,577 units [1]. If the total number of problems reported by Toyota Avalon owners in the last 20 years is 300, and the age of the vehicle is 20, the PPMY index can then be calculated as
PPMY Index = 300 / 57,577 / 20 * 1000 = 0.26.
For more information, refer to this page: A study of reliability comparison across Toyota Avalon model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2005 Toyota Avalon in 2005.
| Service Year | Number of Problems |
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| 2005 |
When making the decision between buying a new or used Toyota Avalon, the following table can be used to compare the 2005 Toyota Avalon with the Toyota Avalon from other model years. Note that the number of problems reported for the 2005 Avalon is 300 while the average number of problems reported for the 27 model years of the Toyota Avalon is 149.