Please help on Volkswagen lease

I don’t know if Volkswagen allows third party buyout. Most likely you would have to go through a VW dealer:

First thing should be to value your current car to see how much equity (positive or negative) you have in your current lease:

Then figure out how much you can get the new car for without a trade-in. Look at other vehicles too, I am sure you can get a better car for cheaper lease from a broker here. Typically trade ins are not always the best value, so doing two separate transactions is advisable.