this is just my opinon....
if your not 100% on buying a cefiro, dont buy one.
they certainly are an acquired taste, so you either love them or hate them. i personally love them hence why ive suck so much money into mine.
and if you love them and genuinely have the opportunity to buy one, buy it.
if your unsure, buy something else.
full consumption will vary massively depending on mods and tune, stock cefiros hardly raise an eyebrow for the police. but a simple front bar and wheels and its an entirely different story.
RB20, gearboxs etc are the same as R32.
suspension is the same as S13.
common probs. wiring issues with the windows requires them to be hard wired on most occasions.
rust, rear wheels arches, below front and rear windscreen.
idiots putting jacks under the chassis rails and crushing them.
the list goes on, theres not a set list of common probs, as ive had plenty.
do your resurce before you buy as not alot of people no the in's and out's of ceffys.
GOODLUCK!!!