LOL. That's a new one. Old, used Mercedes snob.
also, I might as well go ahead and do a 'fixed'...
Try again. Before I bought my E55, I checked consumer reports and actual owner testimonials, and found that these car EASILY go 200k with just routine maintenance. However, note that an E55 is an AMG and shares very little with the "regular" E class. Parts are surprisingly inexpensive. Also note that it was 80k new (at least mine was with all of the options).
And no, I'm not being snobbish. It's simply an awesome car. Drives much better than most new cars I've driven and it's fast enough to beat most "hot rods" out there. Not to mention its safety is unmatched by those shit econoboxes.
So yeah, try again.

Say what? Show me some evidence that original purchase price even has a loose correlation with reliability. More often it just becomes a money pit that the purchaser can't afford to maintain.
How many worn out old lincolns with totally shot rear suspension do you see?
Ironically enough, I went from a Towncar with over 200k on it to my E55. Guess what? No suspension problems with it.
Now since you mentioned the rear suspension on those cars, let me tell you exactly why the rear suspension sags. Lincoln's are equipped with air suspension in the back (so are crown Vic's and Grand Marquis). When those vehicles are raised, even to simply change a tire, the air suspension MUST BE turned off. If it's not, the air bags that are there in place of the springs will keep on inflating because the vehicle is trying to level itself. So guess what happens if it's not turned off? Boom, the bags blow and the ass is on the ground.
And for what it's worth, the only repairs that needed to be done to the car in the 100k I owned it was front sway bar links, front shocks and a muffler.
So your assumption is wrong.
And if it matters, I'm a certified mechanic and have over 23 years experience.
High quality cars are simply built better than econoboxes. The parts are heavier duty and are designed for longevity.