I see a Renault, and if I think anything at all about the thing, my only ad type memory is...
Renault have always been the master of superb advertising, they even managed to make the spectacularly ordinary Renault 25 seem desirable in the 80s, and somehow made the so-hideous-it-makes-you-retch Megane seem desirable to some people too...
But for me, when I see a Renault now, I instantly think "Another one drives a Duster"
And when I see a Nissan, especially a Juke, I instantly think "Another one drives a Duster"
And guess what? When I see a modern Mercedes, especially a B class, I instantly think "Another one drives a Duster"
Oh dear, I don't think I like modern cars
But back to the Giulia, aside from the well-publicized quirks which are bound to put people off, I think it was just released at the wrong time. The saloon market is dying unless it's a luxury performance EV or a crass Rolls Royce; there's no turning back the tide, as king Cnut no doubt said as he hunted for a dry pair of socks.