My '01 S430 had few problems (i.e., instrument cluster, mass airflow sensor, and seat sensor)however, they were expensive repairs and most of them occurred after the manufacturer's warranty had expired. Fortunately, I had the Starmark warranty and therefore didn't have out-of-pocket expense. I have no doubt that an extended warranty is well worth the cost and have purchased one for my current car.
I just bought extended warranty for my S500. As long as the MB dealership accepts it, it doesn't need to be the starmark warranty.
I shopped around and bought the warranty called Universal Warranty ( owned by GM), at what they call the Pinnacle Level, which covers pretty much everything on the car. It costs US$2835 for 48Kmi/4 yrs.
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