They make some kind of power assist flush. I've used them in hotels, but I don't know how they work.
We've been in this house 15 years, and had one clog. The kids are grown now, but back then they had friends over and something got flushed that shouldn't have. I'm sure you know what I mean. These are older American Standard toilets.
In Germany the toilets were super low flow because water was extremely expensive. But I don't remember every plunging there either.