S55 AMG, S65 AMG , S63 AMG (W220, W221) 2001 - 2013 (Two Generations)

W220 S55

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Old Dec 16, 2018 | 08:33 PM
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W211 E55, W210 E55, 94 Daihatsu Mira TR-XX, (Sold)W203 C55/C32, (Sold)04 S211 E320 Designo
W220 S55

How is reliability on this car, other than suspension?
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Old Dec 17, 2018 | 10:24 AM
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'06 MB S55 AMG; '04 Audi Allroad 4.2; '05 BMW M3 Conv.; '92 MB 500E
Mine has been fairly bulletproof for over 9 years and almost 100k miles. But you have to stay in front of the maintenance. It’s not a “break fix” car, meaning, you don’t want to think you’re going to drive it until it breaks, fix it, then keep going. That’s reactive, and any Benz will break you that way. Stay proactive in your maintenance and like most things on a Benz, if it breaks you’ll only replace it once in your ownership. It also depends on how you drive it, garage kept vs. outside, etc., YMMV.

maw
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Old Dec 17, 2018 | 12:43 PM
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W211 E55, W210 E55, 94 Daihatsu Mira TR-XX, (Sold)W203 C55/C32, (Sold)04 S211 E320 Designo
Originally Posted by maw1124
Mine has been fairly bulletproof for over 9 years and almost 100k miles. But you have to stay in front of the maintenance. It’s not a “break fix” car, meaning, you don’t want to think you’re going to drive it until it breaks, fix it, then keep going. That’s reactive, and any Benz will break you that way. Stay proactive in your maintenance and like most things on a Benz, if it breaks you’ll only replace it once in your ownership. It also depends on how you drive it, garage kept vs. outside, etc., YMMV.

maw
Thank you! I see that you also own an M3, how is that like in reliability?
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Old Dec 17, 2018 | 02:28 PM
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'06 MB S55 AMG; '04 Audi Allroad 4.2; '05 BMW M3 Conv.; '92 MB 500E
Originally Posted by markyoussef
Thank you! I see that you also own an M3, how is that like in reliability?
Same. If you stay in front of the maintenance (oil change every 5k, power steering and brake fluid every 2 years, SMG fluid every 3 years or 30k) and you’ll be fine, as long as you drive it like you have some sense. And even if you drive it like you stole it. It’s certainly not as robust as ANY SClass, to be clear. It’s a 3 series after all. So you may replace things twice in your ownership. But on both cars, you MUST stay away from aftermarket parts. They’re generally allergic to them, which makes sense. They are what they are because of the robust factory parts. You start swapping those with Chinese and Korean this and that, then you may as well have a Kia or a Hyundai, because that’s what you’ll be left with.

One last thing, common to both cars, is the Pentosin hydraulic fluid that drives both the SMG pump and the ABC system. When it first came out 15 years ago, people thought it was a “lifetime / no change interval” fluid. They thought that for transmission fluid too. History has shown that to be nonsense, in both applications. So if you change that Pentosin every 3yrs/30k Miles, you wont have trouble out of the SMG (BMW) or ABC (MB) systems.

GL,

maw
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Old Dec 17, 2018 | 06:21 PM
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2003 S55 (SOLD) , 2012 S550
I sold my 2003 S55 with 250k on the clock to ItalianJoe1 on this board.1st engine and 1st tranny. Not sure if he still has it or drives it but he drove home 200 miles without an issue. And YES...get after that ABC... If i had to do it over i would replace all accumulators, rebuild the valves and replace every rubber pressure hose in the system. I spent over 4 grand on repairs JUST because hoses kept blowing.

Good luck.
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Old Dec 19, 2018 | 09:11 AM
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'06 MB S55 AMG; '04 Audi Allroad 4.2; '05 BMW M3 Conv.; '92 MB 500E
Originally Posted by PillDrive
I sold my 2003 S55 with 250k on the clock to ItalianJoe1 on this board.1st engine and 1st tranny. Not sure if he still has it or drives it but he drove home 200 miles without an issue. And YES...get after that ABC... If i had to do it over i would replace all accumulators, rebuild the valves and replace every rubber pressure hose in the system. I spent over 4 grand on repairs JUST because hoses kept blowing.

Good luck.
To build on this, I actually think if you stay on top of the fluid and the accumulators, the hoses don’t blow because you won’t have pressure spikes in the system. But his point is absolutely correct in that you have to think of it as a SYSTEM, not as individual components where you only attend to the one component at a time. Do all accumulators at the same time because if your pulsation damper is making noise, chances are they all need changing and you may as well do the fluid at the same time. That sort of thinking keeps trouble at bay with these.

GL

maw
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