27 problems have been reported for the 2004 Mercedes Benz S430. The following chart shows the 14 most common problems for 2004 Mercedes Benz S430. The number one most common problem is related to the vehicle's electrical system with 7 problems. The second most common problem is related to the vehicle's power train (4 problems).
The following chart shows the number of problems reported during each of the service years since the debut of the 2004 Mercedes Benz S430 in 2004.
| Service Year | Number of Problems |
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| 2004 |
When making the decision between buying a new or used Mercedes Benz S430, the following table can be used to compare the 2004 Mercedes Benz S430 with the Mercedes Benz S430 from other model years. Note that the number of problems reported for the 2004 S430 is 27 while the average number of problems reported for the 7 model years of the Mercedes Benz S430 is 39.