Terios!
I've had a Terios since 2000. 5 years later she's still chugging along.
I bought it 1 month used for 15-16 thousand US...I'd expect it to be about 8 or so now though I could be wrong.
I use regular gas, but if I fill up at an "iffy" gas station, the car will likely choke up while driving. I had to change my gas filter 2x already...my mechanic says it's b.c of dirty gas...
The other chronic Terios problem, that seems to occur throughout the world according to some internet forum i read once, is that they are slightly out of tune. That causes a little shaking at idle, sometimes turning off if the A/C is off. Something about the air mixture i think. I usually get it fixed, but the "fix" only works for a few months and then back to the same old problem.
Also, when breaking, some people experience a "shudder". Problem went away with new brakes, though that didn't work for a friend of mine.
Overall...a nice, fun loving, no stress car. It's my understanding Diahatsu is Toyota's "mini" car division.
Enjoy.