Are monthly payments for a leased car only based on their price or price AND other stuff deferring between different brands. Like if I was looking at two different brand cars with the same lease conditions for he same price, would the rates be the exact same?

 

By lease rates, do you mean the interest?

In a nutshell it works like this:

Car costs 20k. In 3 years, car is worth 11k. Car is then financed then financed on 9k (the difference between current price and future worth, aka "residual") for 3 years at x apr.

Where things get different is when manufacturers spice up the value quotient by offering cheap apr on leases, adding a fixed whole number to the future worth (residual inhancement), and/or changing the % depreciation that the residual is based off of.