reliability of W211 E55 versus E500
I'm considering buying a W211 and it comes down to a choice between these two version of the model (as the E320 costs about the same as the E500).

While it's no contest performance wise, how do they compare reliability and maintenance cost wise? From what I've been able to figure out so far, the issues with the cars stem from a variety of areas (especially the air suspension) but not really the E55-specific drivetrain.
My thinking is therefore, since either version is potentially equally expensive to maintain, I may as well get the far torquier E55... is this a correct assessment?
(History wise, I used to own a W126 560SEC which was wonderful until it got hit by semi)




Examples:
'99 E55 serpentine belt, idler pulley, and tensioner pulley replacement cost me ~$163 in parts.
'99 E55 fuel pump ~$200. Fuel filter ~$40
'05 E55 serpentine belt, idler pulley, tensioner pulley, supercharger belt, supercharger idler pulley (actually a 6 and an 8-rib dual pulley) and supercharger belt tensioner pulley ~$750.
(note: I found the 6302 bearing for the supercharger idler pulley for $12 delivered. That find alone saved me ~$416. So...with some research the belts and pulleys parts cost is ~$334 for the '05 E55.
'05 E55 fuel pump ~$550. Filter assembly ~$550
'05 E500 fuel pump ~$200. Fuel filter ***'y similar cost.
'05 E500 belt, idler and tensioner pulleys - ~ same as the '99 motor.
Regular maintenance costs should be similar (plugs, wires, oil, filters, etc).
Last edited by bbirdwell; Feb 8, 2015 at 01:37 PM.
But the E500 and E55 are both reliable engines. Most E500s have the 7 speed automatic 2004-2006, so that's a bit less reliable, especially in the first two years.
Both cars suffer from suspension problems. Biggest issue on these cars is the air suspension which can leave you stranded.
Where are you based?
But the E500 and E55 are both reliable engines. Most E500s have the 7 speed automatic 2004-2006, so that's a bit less reliable, especially in the first two years.
Both cars suffer from suspension problems. Biggest issue on these cars is the air suspension which can leave you stranded.
Where are you based?
I'm actually in San Francisco right now but will likely be moving to Santa Clara/San Jose soon, hence the need for 4 wheels. There's a few E55s for sale in the bay area...
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But the E500 and E55 are both reliable engines. Most E500s have the 7 speed automatic 2004-2006, so that's a bit less reliable, especially in the first two years.
Both cars suffer from suspension problems. Biggest issue on these cars is the air suspension which can leave you stranded.
Where are you based?
-2006 E500
-2006 E320 CDI
-2004 E55
I ran all of them past 100k miles. Both of the 2006 cars have been relatively trouble free. The 2004 has been a different story
In my opinion, the 2005-2006 cars are generally more reliable. Of course, my experience is anecdotal and there are exceptions.
-2006 E500
-2006 E320 CDI
-2004 E55
I ran all of them past 100k miles. Both of the 2006 cars have been relatively trouble free. The 2004 has been a different story
In my opinion, the 2005-2006 cars are generally more reliable. Of course, my experience is anecdotal and there are exceptions.
My mothers 2006 E350 was probably the worst car my family has ever owned. Every little thing broke. Everything from the brakes going out to the flywheel coming off at a stoplight (quite a sound lol).
off topic, but is that your barolo red e55? Gorgeous, I have the same color and never seen one before.

I had a 07 E350 and was a dream for 50k miles. I did replace front shocks, Tie rod ends, wheel bearings front, and a set of DWS conti's. At 110k it was ready for lower ball joints in the front. 31 mpg on the highway and loved it.
07-E63 7 speed conductor plate went out and the machine gun pano roof. Perfect otherwise.
08 E63 10k miles so far, 84 on the clock and its perfect so far.
I'm still trying to find examples that I like. it's not an easy market for these cars...
I'm still trying to find examples that I like. it's not an easy market for these cars...

I started looking at a family car that would run 12's and even 11's for the price and it stands alone. It 30k value in speed and quality.







