Lots and lots of words with only very selective answers.
That's fantastic. But you still haven't told us how much you spent on repairs in total during the two years you owned it.
And zero failures at low mileage (and yes, 110,000 miles is low mileage) isn't unreasonable. Aside from a PCV service my '98 Volvo didn't have a single non-scheduled-maintenance problem until around 150,000 miles (early last year) when the rear main seal let go. The power locks still work, the power seats are perfect, all of the "bells and whistles" are still fine, even after all that time.
Hell, even on the 1986 951 all the interior bits still work. After 26 years the automatic climate control still works perfectly, the power seats are fine, the power windows are fine, the sunroof operates smoothly and without a hitch. The power locks and mirrors function flawlessly and even the electronic release for the rear hatch is still perfect.
It is NOT normal to have things like power locks failing at such low mileage, especially not when the failures are occurring with regularity. Yes, a one-off failure is to be expected once a car gets past around 130,000 to 140,000 miles, but continuous problems are not in any way normal.
In any case, you've blown past my point. You don't buy a used Mercedes from the early 2000s just because it "happened to catch your eye" on a used car lot for the same reason that you'd have to be an idiot to buy a 951 just because it "happened to catch your eye."
These vehicles are money pits. And for some of us that's OK for the rewards we get from them. That's fine. If you are buying a car like this, you need to specifically want it and know what you're getting into. You need to be committed to taking care of them and to fixing all the crap that the previous owner screwed up. I know, I know, "expensive cars are well-maintained" and all that. For the first owner, maybe (often these are bought as status symbols by people who have no mechanical sensitivity and who don't pay much attention to maintenance at all unless a light comes on). But cars in the $5,000 to $6,000 range are almost never 1-owner vehicles. Usually they've been through a second owner already; someone who bought the car thinking it was a bargain and didn't realize how expensive it was to maintain, so they put things off and start taking the car to places like Jiffy Lube. By the time a car like this is down to $5,000, the probability is that it's looking for its 3rd or 4th owner and there has been a lot of indifferent maintenance in the past.
None of this is saying that the ML series are bad vehicles. I'm absolutely certain that they're a blast to drive, my friend's CLK430 certainly was. But that doesn't make it a wise choice for someone who is worried more about reliability than about a badge. I'm right with you on the benefits of fun vehicles even if they require more in repairs than a lesser vehicle might, but it's important to realize that there are, in fact, trade-offs being made and that no matter how much we may love a certain car, that doesn't mean everyone should buy one and make the same trade-offs we made.
ZV