1.2 cvt is not bad at all, for normal driving its a perfect car, no quality issues, reasonable in-city fuel economy and every thing else is fine. One issue that could be irritating for a few is that when you floor the car, sudden acceleration you will hear engine noise, this noise is alot less in the 1.5 variants, the price difference between 1.2 cvt and 1.5 cvt is very little, with the slight cost difference you get the goodies worth it, you get cruise control, better airconditioning, bigger engine that is much smoother and some cosmetic improvements like chrome handles and shark anteena etc.
I would stronly suggest that consider city 1.5 basic if you are following a buget, or yaris ativ x for that matter, (ativ X is also strongly suggested) there is negligable cost difference and much better that 1.2 cvt, if you want the best, i would recommend aspire.
go for 1.2 city or 1.3 yaris only and only if you want manual
consider alsvin if you want to learn sabr o istaqamat 