Nissan Primera GT 2.0 97-99 or Primera egt 2.0 1990 - 1997, or 99-02 SR20DE engined primera. almera gti...? (sr20de is ***** easy to get extra power out of)
as far as im aware, all the petrol engines in the almera are jap units. my g/f has had one for about 5+ years, 1.8 sport (still in the household family) and hasnt gone wrong once. i've had a 1.8 primera which had some frenchy electrics. it did keep flagging cat problems but there wasnt any. i even sold it with the engine check light on!
but your not going to get 50mpg... the primera more like 33mpg, almera about 35mpg
yes i like my primeras :P