Most banks same rate or close enough.Alfalah is best as they are less finiky and take less time.
The showroom you mention charge way too much for the car or any car,just go check the prices.
Go to any showroom that has the Vitz,pick your car,haggle on the price and then get them to lease or finance it.Most of them do it.
If you want a Vitz i have them 99 to 2004.Will give you best rates in the city.
Can arange finance or lease from any bank you want.Come visit me and i will hand you offer to our finance expert.
He will answer any questions and explain how it works and which bank takes how much etc etc