Brother, my question is, how many corollas (Pak model) go for the service at Toyota dealers? There is no maintenance schedule or history on any used corolla? I have not seen any. Since, you mentioned Vitz example, did you ever go the Toyota for service of you car? Did you buy any warranty services from them? I guess not. Here's my personal comparison study for the two cars, Altis and Prius.
You can save more than Rs.150,000 in five years. I drive more than 2000km/month and my Altis 1800cc avg is 10.km/L (that is city/highway mix). For calculation purposes I assume my monthly drive 2000km.
Comparison with Altis 1800cc ; avg. 10km/L.
2000km / 10 = 200 Liters
200 Liters x Rs. 105 = Rs. 21000 monthly spending. (assume Petrol price remains constant at Rs. 105)
21000 x 12months = Rs. 252,000 Annual fuel costs.
My Prius Average is 20.6km/L within City. Highway its 26.7km/L and Mix Use is about 23.3km/L. For calculation purposes I will use 20km/L city average fuel for Prius (instead of mix use average).
2000km / 20 = 100 Liters
100 Liters x Rs. 105 = Rs. 10500 monthly spending. (assume Petrol price remains constant at Rs. 105)
10500 x 12months = Rs. 126,000 Annual fuel costs.
Annual Savings: 252,000 - 126,000 = Rs. 126,000 in fuel costs.
Since, oil and filter change is required for both models. But I will add it to Prius costs. Assume per oil change, filters costs Rs. 5000 x 4 times/year = Rs. 20000 annually. Even then your net savings are 126,000 - 20,000 = 106,000 annual savings. For next 5 years, your savings will be 106,000 x 5 = Rs. 530,000. So, if you bought Prius for 18lacs then you can resell it for atleast 15lacs after 5 years. Keeping in mind that vehicle prices in Pakistan has gone up more than 100% in last 4-5 years. You still in the savings side.
Brother, there is not even a single incident that I am aware of, when someone ever needed to replace the Hybrid battery (since 1997 first launch). There is vehicle in USA having 471,000 miles = 752,000km and the battery still charges very well and fuel average is excellent. So, If I drive 24,000 km annually then it takes more than 30 years to reach the 752,000 km mark.
As per your comments, let us assume a battery replacement after next five years. At present it costs about US$2500 x 95 = 237,500 for a Hybrid battery from Toyota. You can buy a re-build battery for about US$1100 x 95 = 104,500 with warranty. For calculation purposes we assume battery costs 250000 + assume Rs. 150,000 in duties and other fees = Total: 250000+150,000 = 400,000.
5 Years fuel savings Rs. 530,000-400,000 = Rs. 130,000 -
You can even search the wikipedia for Prius. You will find a research details given there. I hope that helps.