So im completely torn about getting a Subaru now; I've always heard they were supposed to be good cars, but theres even threads on here with people talking about how much is going wrong with their basically new cars. Not just engine problems, but problems with the windows, seat belts, air conditioners, and trunk latches.
You will find these sorts of complaints on every forum, Toyota, Honda, whatever. People speak out when they're unhappy, an the Internet is the platform of choice for most of them.
There is one source of actual statistical data for automobile reliability available to the public, and that is Consumer Reports, which elicits over 640,00 detailed surveys from its members every year, and has frequency-of-repair data on millions of individual cars. The Forester is a popular choice among those members, so their data on Gen4 Foresters (2014-2018) is based on the experiences of thousands of owners. Overall, these Forester has been average to much better than average, and in the critical areas of engine, transmission, cooling, fuel system, brakes, suspension -- what I think of as the "stranded by the side of the road" stuff -- they have earned top marks in reliability since 2014. Even the 2014, the first year of this version, is still above average in everything important.
It's easy to get scared off by anecdotal evidence, and to the people telling the anecdotes statistics don't mean much. My son has had nothing but trouble with two CR-Vs in a row, even though it's statistically a reliable car (which is why he bought the second one). Bad luck, or maybe his wife's driving?
I've been on this forum for four years, and haven't really had an occasion to start a thread titled "No Problems with My Forester." But I could have.