@Mach_Tuck is exactly right. The KMF rep is either trying to dissuade you from doing this, or they are clueless.
A lease is a loan packaged in a very interesting way.
As with any loan, car, mortgage, etc... you can pay in advance the Principal of that loan and legally, the bank/finance company can NOT charge you interest when doing so - AKA the Rent Charge.
On another Forum I have seen the actual buyout paperwork from KMF, and it is exactly as it should be. Just the steam of depreciation amount (stream of payments remaining within the lease) WITHOUT the Rent Charge (interest).
Granted, Lease Cash is designed to be thrown around via dealers as “bonus cash” or “lease discount” or whatever and however they want to talk about it to get a car sold. KMF would never state that, but it’s for dealer benefit and marketing.
Kia simply sells the car for a massively reduced discount, while it’s finance division makes that up in spades.
At the end of the day, 95% of people leasing a car have no clue how it works, and if they added it all up, it is typically more than the MSRP of the car. But we like having what we cannot afford, and for those that have every little or almost nothing to put down, can get pulled in quickly. They cannot afford to buy the car, it they could “afford” to pay that lower monthly for 3 years... and they forever get into a car rental box.
Now, there are clearly others who have money, or they get a corporate car allowance, so they just go lease the fanciest car they can. Got it. Everyone is in a different situation, I just feel for the people that get into these lease programs and have no idea.
I have a family friend, former CEO of a major corporation - retired. He leases Mercedes every two years - says he has no idea how they can possibly make money doing it. Ha!