698 problems have been reported for the 2004 Honda Odyssey. The following chart shows the 23 most common problems for 2004 Honda Odyssey. The number one most common problem is related to the vehicle's power train with 214 problems. The second most common problem is related to the vehicle's air bags (110 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 2004 Honda Odyssey in the United States are 152,671 units [1]. If the total number of problems reported by Honda Odyssey owners in the last 22 years is 698, and the age of the vehicle is 22, the PPMY index can then be calculated as
PPMY Index = 698 / 152,671 / 22 * 1000 = 0.21.
For more information, refer to this page: A study of reliability comparison across Honda Odyssey model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2004 Honda Odyssey in 2004.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
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| 2004 |
When making the decision between buying a new or used Honda Odyssey, the following table can be used to compare the 2004 Honda Odyssey with the Honda Odyssey from other model years. Note that the number of problems reported for the 2004 Odyssey is 698 while the average number of problems reported for the 31 model years of the Honda Odyssey is 476.