It looks to me like Fiat are taking a leaf out of BMW's book and trying to ride on the coat tails of a much loved predecessor.
In Fiat's case the nippy little 500 which to my biased eye looked like the nearest competitor to the original Mini. Definitely not the VW Beetle, that was in a different class.
In BMW's, latching on to the one and only Mini. One of which I am a proud owner.
In both cases it seems that the powers that be decided that bigger was better and completely forgot why these cars were originally designed in the way they were. That is to be the minimum of car with the maximum of utility. To be able to get four adults, just, in a tiny car powered by a small engine was a real achievement and the sales figures show that the designers gave people what they wanted.
On the other hand the modern replacements have succumbed to the current fashion for large ungainly dumplings powered by large engines to get them moving. If the original 500 had an engine of only 479 cc what does that say about the 1.4 or 1.7 litre engines of the new car?
To my mind these companies should stop and think about this. The new cars are not in the same class as the originals and there is a case to be made for giving them new names. Still I suppose that marketing will always triumph over honesty.