84 problems have been reported for the 2004 Mazda MPV. The following chart shows the 16 most common problems for 2004 Mazda MPV. The number one most common problem is related to the vehicle's engine and engine cooling with 24 problems. The second most common problem is related to the vehicle's air bags (14 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 Mazda MPV in the United States are 25,294 units [1]. If the total number of problems reported by Mazda MPV owners in the last 18 years is 84, and the age of the vehicle is 18, the PPMY index can then be calculated as
PPMY Index = 84 / 25,294 / 18 * 1000 = 0.18.
For more information, refer to this page: A study of reliability comparison across Mazda MPV model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2004 Mazda MPV in 2004.
| Service Year | Number of Problems |
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| 2004 |
When making the decision between buying a new or used Mazda MPV, the following table can be used to compare the 2004 Mazda MPV with the Mazda MPV from other model years. Note that the number of problems reported for the 2004 MPV is 84 while the average number of problems reported for the 11 model years of the Mazda MPV is 69.