Well, RX8 FC is damn high (estimate), my friend driving RX7
infini, he says his full tanks $80, only can drive abt 330km, and
that is for normal usage, not blowing the turbos (infini has 2
turbo).
SO I guess for RX8 will probably slightly better, can maybe achieve
like 400km.....still damn high.
Not sure abt the FC abt ITR, but dont think it is that high...also
depends on how you drive