508 problems have been reported for the 2003 Toyota Tundra. The following chart shows the 21 most common problems for 2003 Toyota Tundra. The number one most common problem is related to the vehicle's structure with 141 problems. The second most common problem is related to the vehicle's air bags (83 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 2003 Toyota Tundra in the United States are 112,771 units [1]. If the total number of problems reported by Toyota Tundra owners in the last 23 years is 508, and the age of the vehicle is 23, the PPMY index can then be calculated as
PPMY Index = 508 / 112,771 / 23 * 1000 = 0.20.
For more information, refer to this page: A study of reliability comparison across Toyota Tundra model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2003 Toyota Tundra in 2003.
| Service Year | Number of Problems |
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| 2003 |
When making the decision between buying a new or used Toyota Tundra, the following table can be used to compare the 2003 Toyota Tundra with the Toyota Tundra from other model years. Note that the number of problems reported for the 2003 Tundra is 508 while the average number of problems reported for the 28 model years of the Toyota Tundra is 320.