Any used vehicle will be more trouble than a new one no matter what the maker.
Sure, I'll grant that, in general.
But still, is it 50% more trouble, or 0.5% more trouble? The first should influence your buying decision, the second is a rounding error.
My current BMW has over 150,000 km on the clock and is now 8 years old. The only thing where it is noticeably different from when I bought it (used, at about 2 years old and 40,000 km) is that one rubber switch on the steering wheel is worn off and I'll ask to replace it the next time it goes in for maintenance.
Maybe I'm lucky. The point is: There are plenty of perfectly fine used cars out there. Many of which are no trouble for their owners.
Personally, my next car is likely to be another BMW, as soon as the dashboard designers get off drugs and put the display back into the dashboard instead of sticking it on top like a cheap after-market add-on.