Starting this month we have a new question to measure, as objectively as possible, the severity of a problem. Many people have been asking for reliability stats that weight problems by how severe they are, and once we have enough responses with the revised survey we'll start providing this.

Also this month: updated reliability stats.

 

We updated results for the W221 S-Class based on owner experiences through September 30, 2010. With a reported repair frequency of 129 repair trips per 100 cars per year, the 2007 is worse than average.

This is based on a small sample size, so the result is not precise.

We'll have further updated in February and May. With more participants, we could provide more precise results and cover more model years.

For more detailed results, and to sign up to help:

Mercedes-Benz S-Class reliability ratings and comparisons

 

We updated results for the S-Class based on owner experiences through December 31, 2010. With a reported repair frequency of 105 repair trips per 100 cars per year, the 2007 is worse than average.

This is based on a small sample size, so the result is not precise. The reported repair frequency has been decreasing as we receive data on more cars. It's probably also lower for more recent model years.

We'll have further updated in May and August. With more participants, we could provide more precise results and cover more model years.

For more detailed results, and to sign up to help:

Mercedes-Benz S-Class reliability ratings and comparisons

 

We updated results for the S-Class based on owner experiences through March 31, 2011. With a reported repair frequency of 83 repair trips per 100 cars per year, the 2007 is now about average.

This is based on a small sample size, so the result is not precise. The reported repair frequency has been decreasing as we receive data on more cars.

We'll have further updated in August and November. With more participants, we could provide more precise results and cover all model years from 1995 on.

For more detailed results, and to sign up to help improve this information:

Mercedes-Benz S-Class reliability ratings and comparisons

 

We updated stats for the Mercedes S-Class based on owner experiences through June 30, 2011. With a reported repair frequency of 86 repair trips per 100 cars per year, the 2007 remains about average.

We'll have further updated in November and February. With more participants, we could provide more precise results and cover more model years. With the 2000 we're currently just a couple responses short.

For more detailed results, and to sign up to help improve this information:

Mercedes-Benz S-Class reliability ratings and comparisons

 

We have updated our reliability stats for the S-Class based on owner experiences through December 31, 2011.

Repair frequencies, in terms of repair trips per 100 cars per year:

2007: 77

2000: 114

Both are about average.

We'll have further updates in May and August. With more participants, we could provide more precise results and cover more model years.

For the details, and to sign up to help improve this information:

Mercedes-Benz S-Class reliability ratings and comparisons

 

We have updated our reliability stats for the S-Class based on owner experiences through June 30, 2012.

Repair frequencies, in terms of repair trips per 100 cars per year:

2007: 69, about average, small sample size

We'll have further updates in November and February. With more owners involved, we could provide more precise results and cover more model years.

For the details, and to sign up to help improve this information:

Mercedes-Benz S-Class reliability ratings and comparisons

 

We have updated our reliability stats for the S-Class based on owner experiences through September 30, 2012.

Repair frequencies, in terms of repair trips per 100 cars per year:

2007: 67, about average, small sample size

We'll have further updates in February and May. We'd love to provide more precise stats and cover all model years--just a matter of getting more owners involved.

For the details, and to sign up to help:

Mercedes-Benz S-Class reliability ratings and comparisons

 

We've updated our reliability stats for the S-Class to include owner experiences through March 31, 2013.

Only the 2007 again: 57, moderate, small sample size

 

The stats now include owner experiences through June 30, 2013. (Another source is about 14 months behind.)

Repair frequencies, in terms of repair trips per 100 cars per year:

2007 S-Class: 47, moderate, small sample size

We'll have further updates in November and February. Hoping for more participants, so we can provide more precise stats and cover more model years.

Mercedes-Benz S-Class reliability ratings and comparisons