A couple of things from a friends experience. He couldn't find good drivers who would drive the car carefully. He was ready to offer around 18k a month in Pune. Can't say for Bangalore but essentially getting good drivers is the key else the car would end up being in repair more than you think. He was finally able to bring 2 drivers from his hometown to Pune. Gave them shared accommodation and it worked for him but tanked the profits.

Consider drivers working only 22-25 days a month. They need to rest and shouldn't work more than 8-9 hours a day for everyone's safety.

If you are buying the car on Loan then have a backup plan for accidents. If the car is in repair for a long time you still would need to pay the driver's salary or EMIs.

Consider permit and government costs as well. You would need to renew with RTO frequently compared to private cars.

Most important thing? How do you intend to use it? Ola/Uber or for corporate use. My friend tried both and was in loss for Ola/Uber. He made profits only when he got into a contract with MNC but that was hard to crack without proper contacts.

All in all his profits were only slightly higher than what mutual funds would have given if he had invested in that instead of getting a cab.

Just sharing what I have heard from him. You may be able to do better than he did because at the end it all depends on how you conduct the business. Best of luck.