 I bought the brilliant silver C280 from a wealthy family in Westchester County, NY in March of 2018 with 24k miles - yes that's an average of 1,200 miles per year! As an owner of '91 300E & '97 E320 I am well versed in these cars.  Little did I know that the V6 is a huge improvement over the I6.  Many speak of the W124 & M103/4 as the holy grail of MB.  Having replaced the water pump and now with the gasket leaks (oil in colant) on the M103 from the W124, I believe the V6 is much better.  I see many owners with 200k+ miles on these M112 engines without much repairs.  I can see why.  The engine is smooth and powerful without much drama when pushed. MPG is not that great and headliner is starting to sag.  But, the car looks great and feels like a proper MB, solid!  I plan on driving and enjoying this beautiful car for many many miles.