69 problems have been reported for the 2004 Mitsubishi Outlander. The following chart shows the 16 most common problems for 2004 Mitsubishi Outlander. The number one most common problem is related to the vehicle's suspension with 19 problems. The second most common problem is related to the vehicle's engine and engine cooling (8 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 Mitsubishi Outlander in the United States are 22,458 units [1]. If the total number of problems reported by Mitsubishi Outlander owners in the last 18 years is 69, and the age of the vehicle is 18, the PPMY index can then be calculated as
PPMY Index = 69 / 22,458 / 18 * 1000 = 0.17.
For more information, refer to this page: A study of reliability comparison across Mitsubishi Outlander model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2004 Mitsubishi Outlander in 2004.
| Service Year | Number of Problems |
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| 2004 |
When making the decision between buying a new or used Mitsubishi Outlander, the following table can be used to compare the 2004 Mitsubishi Outlander with the Mitsubishi Outlander from other model years. Note that the number of problems reported for the 2004 Outlander is 69 while the average number of problems reported for the 20 model years of the Mitsubishi Outlander is 79.