Dear sifusI'm currently comparing between the two cars and have to say they have very little in between. Off course it would be cheaper to go for the older 523i ( by abt 20 - 25K) but i somehow find that its slighly more sluggish compared with the newer 520i with the 2.2 ltr engine. Can this be true? Both car have abt 170 bhp if i'm not mistaken.Which car would you guys recommend? the 523i is a UK imprort while the 520i is a ckd. Thanks. B)