If compare new persona to preve, which is cheaper to maintain? Which one is more reliable?

Seems like preve components doesnt last long.

Yup, that's my main worry. I was hoping that changing the tyres would help but apparently 14 inch rims can't be fitted on the Alza. 
So, I will be eliminating it from my list.
That's actually my favourite variant of the X70. However, for now, I am not considering the X70 because it is a bit too big and I am worried that the maintenance cost might be a little too high. Thanks for your suggestion. 
Yes, I like the Persona because it is one of the tallest sedans and the windows are large.
The interior colour scheme also suits my taste 
That's good but unfortunately I find the roof of the new Vios too low and the dashboard is too high. It feels dark and dingy inside.

I did google on the problems on preve, major prob is the oil cooler hose for turbo bocor, all engine oil will leak out and the engine might need a top overhaul... scary man... and in long term if its a turbo engine, it might affect the gearbox and engine itself too.

I think I will not get a second hand preve turbo for now. It seems new persona is a better choice. I will wait and see. Im currently driving a persona SV. No major probs so far.