My Fiesta weighs 950kg, it has small 13" wheels (not alloy) and an iron block up front which may explain some of it. But it is still heavy for a small car, I suppose the airbag, side impact bars, ECU electronics, seatbelt gas all add weight.

I drove  Clio III on my learner car, it had a 1.2 16v engine and that seemed really heavy, must have weight at least 1200kg if not more.