I tried voting for multiple(Uno/Palio/Siena/Petra) cars, but not able to do so. I feel all these four cars build quality is good and equal. Having said that build quality/plastic quality of recents FIAT's(Punto/Linea) are not good when compared with the Old FIAT models. I sat in my cousins 13 year old FIAT Palio and the first thing i noticed was the good quality of the interior plastics/fit and finish, when compared with my 3 year old Punto. Also, the external body panels of Palio feels more rugged/thick when compared with Punto.