As per my limited knowledge, there are tax benefits for corporate car lease.
Basically, if you buy a car on EMI(without car-lease), you pay EMI after taxes i.e., after taxes, you get a net salary from employer, and you pay EMI from the in-hand salary.
With corporate car lease, the EMI will be deducted from your salary first, then remaining salary is taxed. So, effectively your taxable salary reduces(similar to 80C, 80D etc). Another advantage is that there's no down payment.
Not sure about the residual value of the asset, but the company and the broker have fixed rule for it. You can either buy the asset on the proposed amount after the lease period expires or start another lease for another car(people usually buy the car because the price becomes like ~20% of the original car value after say 4 years).
Estimated monthly EMI depends upon your salary and your risk appetite. you can't take a Mercedes in lease with ₹20K monthly salary. In my previous org, the lease payment could be up to 25% of the base salary.
Companies have different rules for dropping lease midway. In most cases, you either need to transfer the car to your name by paying remaining amount or find some other employee to carry the lease.
I am planning to take a car on company lease in late 2022 or early 2023. Will update this thread with details then.