Please try to undestand,
Taxi driver s handle the cars so roughly that the car require frequent heavy maintenance work ,(such as suspension, color, clutch plates , body and much more) that the indian car companies are not daring to offer them warranties and extended warranties at a cost , which are offered to individual owner , many times free of cost.
Also demand for spares from taxi segment is so high that the availability of spares becomes a problem for us.
Also insurance pollicies for taxi are less covering and attract high premium.
One good thing is that whenever you want to sell your old car having taxi image, you get ready market and easy deal (compare h city vs indigo)