Ironically, a Toyota. Specifically, my 1994 4Runner (that's from back when they were still the same as the famous indestructible Hilux, BTW). I've owned it since just before the pandemic and still haven't managed to get it to run right yet. It's been parked for months because I can't find any mechanic willing to touch it.

The lesson here is that when people say the 3VZE is the one bad engine Toyota made, believe them. The most common advice I've read for fixing it is "rip it out and swap in a 5VZE," which I'm seriously considering.