sir like nfssaad said it totally depend on owner and our mechanics, i gave you my experience. I sold prius to Lahore genuine 62,000km driven car everything was working fine but after few days owner calls me and tell me that prius is not converting to Hybrid mode and he also get scan from so called toyota authorized service centres, they say battery fault and gave him estimate of 1,25,000/- with replacement of battery.
But i have ask and discuss this issue with my friend who is expert in prius electronics and also Pakwheeler @capsat Sir. I told them the same thing, so eventually problem came that fault code HV is coming because. due to moisture the cable which discharge the battery to generator is faulty because it was winter season. So they change the orange type cable which are coming from hybrid battery to generator and problem solved. Cost of cable was Rs 10,000/- that too because in Lahore and Karachi we have many half cuts and spare of prius.