Rotary engine are reliable, provided they are looked after.
I agree, if you buy a lemon, you are in trouble. But factor in £1200 on top of your purchase price and you can get a full fresh rebuild for peace of mind.
I know I sound like I am banging on about this. But I hear horror stories all the time about both the 13B and the Renesis Rotary engines. I've put a combined total of almost 100k on rotary engines, and never needed a single rebuild. All compressions still high when it came to selling on.
Maybe I was just a lucky one......or it could be that I just looked after my engine.
Fuel consumption was no worse than my 350z, or my HSV for that matter. And all cars are pretty much worthless when you drop below the £10k barrier. Never going to make money back, but we don't all buy cars for that. If that was the case, I'd be snapping up a Honda NSX, locking it in a garage under cover, and bringing it out in 20 years time and rolling in the appreciation.