111 problems have been reported for the 2004 BMW 525. The following chart shows the 17 most common problems for 2004 BMW 525. The number one most common problem is related to the vehicle's air bags with 33 problems. The second most common problem is related to the vehicle's electrical system (19 problems).
The following chart shows the number of problems reported during each of the service years since the debut of the 2004 BMW 525 in 2004.
| Service Year | Number of Problems |
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| 2004 |
When making the decision between buying a new or used BMW 525, the following table can be used to compare the 2004 BMW 525 with the BMW 525 from other model years. Note that the number of problems reported for the 2004 525 is 111 while the average number of problems reported for the 13 model years of the BMW 525 is 39.