W221 S-Class reliability -- better info
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W221 S-Class reliability -- better info
TrueDelta reports absolute repair rates that make the differences between cars much clearer. Results are updated four times a year, to track cars closely as they age.
Among Mercedes, we currently provide results for the C, E, and GL. No year of the S-Class is included in the survey yet. For a model year to be included, at least 25 owners have to sign up to participate.
Participants simply report repairs the month after they occur on a one-page survey. When there are no repairs, they simply report an approximate odometer reading four times a year, at the end of each quarter.
To encourage participation, participants receive full access to all results, not just those for the S-Class, free of charge.
For the details, and to sign up to help out:
Car reliability research
Among Mercedes, we currently provide results for the C, E, and GL. No year of the S-Class is included in the survey yet. For a model year to be included, at least 25 owners have to sign up to participate.
Participants simply report repairs the month after they occur on a one-page survey. When there are no repairs, they simply report an approximate odometer reading four times a year, at the end of each quarter.
To encourage participation, participants receive full access to all results, not just those for the S-Class, free of charge.
For the details, and to sign up to help out:
Car reliability research
Thread Starter
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I don't want to waste anyone's time, so a model year isn't included in the main reliability survey until at least 25 owners have signed up. We're not there yet. At this point just seeing if we can get enough owners to agree to participate.
There are some other surveys on the site, such as the one for real-world fuel economy, that have no minimum. Those are entirely optional.
There are some other surveys on the site, such as the one for real-world fuel economy, that have no minimum. Those are entirely optional.
Thread Starter
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Now 88. The 2007 is now halfway to the minimum.
Help get your year included in the survey:
Car reliability research
Help get your year included in the survey:
Car reliability research
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Thread Starter
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Now 103, and the 2007 is just six cars short of the minimum.
To help get your year included--I'd like to have some results to share here:
Car reliability research
To help get your year included--I'd like to have some results to share here:
Car reliability research
Senior Member
Joined: Oct 2005
Posts: 365
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From: San Jose
CL65 AMG , white S550 Sport w/ white Giovanna 22s, wild custom chopper
here is a data point - i was told that Mercedes put something like 60k miles on 221 model before claiming victory on the vehicle, i guess in late '05 or early '06 when the 221 became available. shop foreman here in San Jose feels like the 221 is more solid than 220 and possibly an example of most reliable S to date (in the recent years - I guess since W126).
would you guys agree? has anyone heard of the quality control test drive of 60k miles or so on multiple 221 cars before making the model generally available?
would you guys agree? has anyone heard of the quality control test drive of 60k miles or so on multiple 221 cars before making the model generally available?
Member
Joined: Nov 2002
Posts: 96
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From: NYC
2007 S550 Sport
I have to say I am very pleased with the reliability of the W221. My father's W220 was plagued for the first year (spent almost 3 months in the shop first year alone) and was a bit hesitant with the W221 but took the plunge anyway. I have not had the car in for anything since purchase.
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Now 121 signed up. A good start, but more remain needed to provide results for all model years. Results recently upddated for the C, E, and GL.
Car reliability research
Car reliability research
Thread Starter
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Now 129. Better, but more remain needed to provide reliability stats for these cars.
Not yet signed up? Details here:
Car reliability research
Not yet signed up? Details here:
Car reliability research
Thread Starter
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Now 148 signed up, plus another 12 for the CL. I should know in the next day or two whether we'll have that result in May.
Not yet signed up? Help make this happen:
Car reliability research
Not yet signed up? Help make this happen:
Car reliability research
Thread Starter
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We have an initial result for the W221 S-Class based on owner experiences through June 30, 2010. With a reported repair frequency of 154 repair trips per 100 cars per year, the 2007 is worse than average.
This is based on a very small sample size.
We'll have further updated in November and February. With more participants, we could provide more precise results and cover more model years.
For more detailed results, and to sign up to help:
Hyundai Elantra Touring reliability comparisons
This is based on a very small sample size.
We'll have further updated in November and February. With more participants, we could provide more precise results and cover more model years.
For more detailed results, and to sign up to help:
Hyundai Elantra Touring reliability comparisons
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Sorry, didn't remember to modify the link.
The correct link would have been:
Mercedes-Benz S-Class reliability comparisons
The correct link would have been:
Mercedes-Benz S-Class reliability comparisons
Thread Starter
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Next week we'll start previewing the next set of results to participants. The preview results will be updated as responses come in.
As always, the more owners participate, the better the information we can provide to everyone.
Car reliability research
As always, the more owners participate, the better the information we can provide to everyone.
Car reliability research
Thread Starter
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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, updated reliability stats this month.
As always, the more owners participate, the better the information we can provide to everyone.
Car reliability research
Also, updated reliability stats this month.
As always, the more owners participate, the better the information we can provide to everyone.
Car reliability research
Thread Starter
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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
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
Thread Starter
MBWorld Fanatic!
Joined: Jan 2006
Posts: 1,101
Likes: 9
We updated results for the W221 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
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
