Considering a 2017 S550 Cabrio – High Mileage, Prior Accidents

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Old Oct 5, 2025 | 12:12 PM
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2017 S550 Cabrio, EQS SUV
Considering a 2017 S550 Cabrio – High Mileage, Prior Accidents

Hi all,
New to the forum and hoping for some perspective. I’ve always wanted an S Cabrio and am about to pull the trigger now that prices have come down. I’m looking at a 2017 S550 Cabrio

Last edited by newcabrio; Oct 20, 2025 at 11:15 AM.
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Old Oct 5, 2025 | 01:43 PM
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2013 W221 S550 2016 C217 S550
M278? Timing chain covers leaks. Front differential leaks. Should have a cast iron block as a 2017. Still engine compression is still an issue.I would not own a used Mercedes unless I did my own repairs.

Last edited by red996; Oct 5, 2025 at 01:50 PM.
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Old Nov 30, 2025 | 08:40 PM
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2007 S550 & 2009 CL63 AMG & 2009 BMW 328i Convertible
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Originally Posted by red996
M278? Timing chain covers leaks. Front differential leaks. Should have a cast iron block as a 2017. Still engine compression is still an issue.I would not own a used Mercedes unless I did my own repairs.
I sold my CL63 last year. (Big regret,) I also gave my lady my 07 S550 which I bought brand new. That car lasted to 240k with not major problems. A water pump, fuel pump, Thermostat along with a few minor thing.I purchased a used Jaguar XK (I know, I lost my damn mind) Anyhow, I was about to pickup a S550 Coupe. 2015 with 65K..... I'm reading in forums that it probably will not go the distance. I drive my cars. I don't own garage queens. I've had about five cars with my S550 and that's why it only had 249k. And if I wasn't for my lady; I would still have it..(She said a light came on the dash saying "Coolant low" This jackass said she didn't want to pull over until she felt safe) I swear I hate her now.
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Old Dec 5, 2025 | 03:10 PM
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2005 CL600 (US model) & 2019 S450 Coupe (EU model)
My suggestion is to go for an early S560 Cabrio - much more reliable engine, updated suspension, updated infotainment, and a lot more. Elaborated in length here: https://mbworld.org/forums/s-class-c...ml#post9239442
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