Considering S550, how’s the reliability
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BMW
Considering S550, how’s the reliability
Considering high mileage S550 136K to be exact. What should I look out for on a higher mileage cars? Also how’s the reliability on these S550, if it’s been maintained properly. Also I know most if not all are on air suspension, given the age how long/miles they topically lasts? Thanks in advance.
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15 S550 4Matic, 86 560SL
The S550 is a reliable vehicle. Airbags on any Benz vehicle typically last about 10 years /100k miles; very few reports of them leaking on the W222 because it’s still relatively new. Coolant lines can leak, suspension bushings wear, but other than that there are no common issues.
Good luck!
Good luck!
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2019 S560, 2015 Honda Civic Hybrid
Suggest you verify the major service items have all been done ... engine mounts, suspension bushings/ball joints, transmission fluid & filter, spark plugs, driveshaft flex couplings.
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2013 W221 S550 2016 C217 S550
M278? Hears my experience with a w221. Same engine... Bought at 70k miles. Currently at 100k miles. DIY. BTW. Vacuum pump. Turbo coolant line. Had to reseal the timing chain covers. Rtv. No gaskets? MB. Lol. It doesn't burn oil. I am thoroughly impressed with this engine. AFAIK it only got better in the W222. If your looking for perspective look at TT BMW V8's.
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W212 FL
I'm also interested in buying a Mercedes-Benz S550 with M278 engine. However, I was told by many that I should not buying a car with a high mileage because they said they didn't know how the cars were driven before and turbos could be a major problem and replacing them could be a fortune .Other than that, whoever I confer to say M278 is a great engine
Last edited by BenzV12; Nov 5, 2022 at 02:53 AM.
Member
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2013 W221 S550 2016 C217 S550
I'm also interested in buying a Mercedes-Benz S550 with M278 engine. However, I was told by many that I should not buying a car with a high mileage because they said they didn't know how the cars were driving before and turbos could be a major problem and replacing them could be a fortune .Other than that, whoever I confer to say M278 is a great engine
Last edited by red996; Nov 4, 2022 at 02:39 PM.
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Joined: Mar 2019
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From: Half Moon Bay, CA
2016 S550e, 2005 Nissan Xterra 4x4, 1984 300ZX
You just need to keep in mind your buying a 100k+ ar new that has higher miles and so fixing it will be a lot more than if you bought a Honda Accord with that mileage. MB parts are expensive and even indy mechanics that specialize in MB are more than the usual mechanic out there. If you have a guy you trust to look at i would I would spend the $$ for a deep inspection and also review all records.
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Member
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2013 W221 S550 2016 C217 S550
I did the spark plugs on it too. Lots of room. I did have to replace a coil pack on Cylinder 5. Need to keep an eye on the cam sensors for oil leakage into the wiring harness. MB Air suspensions seem to start to have problems at the 10 year mark. That seems to be the consensus among MB techs I have talked to. I did have problems with a CV boot on the passenger side inner front axle. I bought the CV boot kit and pulled the axle out. Noticed the differential seal was "sweating". Replaced that.
Last edited by red996; Nov 4, 2022 at 02:38 PM.
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From: Palm Beach, Fl
2016 S550 sport, 2018 GLC300, M3, Zo7, 2021 Sierra Denali
They are very reliable. But where the car is from makes a big difference in some reported maintenance. A northeast car with harsh winters, cold starts, potholes, and salt is a very different car than Florida, Arizona, and Texas. A well cared for southern car looks new at 100,000 miles. Just as different underneath too.
