684 problems have been reported for the 2003 Ford Expedition. The following chart shows the 24 most common problems for 2003 Ford Expedition. The number one most common problem is related to the vehicle's engine and engine cooling with 163 problems. The second most common problem is related to the vehicle's electrical system (103 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 Ford Expedition in the United States are 244,821 units [1]. If the total number of problems reported by Ford Expedition owners in the last 23 years is 684, and the age of the vehicle is 23, the PPMY index can then be calculated as
PPMY Index = 684 / 244,821 / 23 * 1000 = 0.12.
For more information, refer to this page: A study of reliability comparison across Ford Expedition model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2003 Ford Expedition in 2003.
| Service Year | Number of Problems |
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| 2026 | |
| 2025 | |
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| 2003 |
When making the decision between buying a new or used Ford Expedition, the following table can be used to compare the 2003 Ford Expedition with the Ford Expedition from other model years. Note that the number of problems reported for the 2003 Expedition is 684 while the average number of problems reported for the 30 model years of the Ford Expedition is 340.