If you can pay the remaining amount ASAP, like within 6-10 months, then lease is kinda ok, since you are sure you can buy it, but saving for months is boring.
Example: Say i earn 3 lac per month, and i want a car that cost 18 lac, saving for 6 months is kinda out of the question, so why not just lease it, and pay back it within a year? many private companies including ORIX let's you pay the remaining payment without adding any % of tax/interest on full-payment.
That's why i am doing a lease with ORIX; within 7-8 months, the car will be fully paid for and on my parents name.
Avoid interest- try to find a bank that does Islamic Banking, i don't even understand how Islamic Banking works but yeah.
Good luck, and take your time, read the terms and conditions properly, The hard time is signing the cheques lol.