Not reliable, expensive maintenance, low ground clearance, shocks and springs are not designed for load bearing or uneven roads.
Belta is basically an upgraded Kei Sedan for crowded cities like Tokyo, HongKong, Mumbai etc not a world car.
What happens if someone hit front or rear bumper or lights.
Even the depreciation amount would equal the price of new part of old shape Corolla.
For rent u need the cheapest maintenance and strongest reliability so u can maximize your profit.
Definitely you cant charge a new shape XLi amount even if you will give a Belta.
I know people who buy 50 cars at a time to run on rent business and they buy all Corollas XLi everytime.
Myself is running 2004 GLi, 2005 XLi, 2009 XLi & 2012 XLi on rent since past 10 years.
The beauty of corolla is that you can run it on 180 rupees Guard filters, Eurocrapy tyres, Shell Yellow daba oil and on CNG and it would still run forever.