It's quite interesting to see predictions of parts failure mileage. Various parts fail at different mileages, even the exact same model vehicles.

The poster mentioned a transmission bearing, but what if the car has a manual transmission? Even it has an automatic, why would the part fail on two different vehicles at the same mileage?

I have an SLK with the same engine. There is no reason that with proper care and maintenance it can't go hundreds of thousands of miles. The only thing that you need to see to that is not part of the factory maintenance schedule is the supercharger oil. Don't use anything besides the oil specified by Eaton which is the same whether supplied by MB, GM or Ford. Change it every 100,000 miles. All it involves is oil that bathes the supercharger gears. To drain it properly, you are best served by removing the supercharger and pouring it out. It's not a big deal to remove.

Hope this helps.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

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