A friend I knew leased. Don't recall the details, but he was pretty p.o'd. Seemed like he could never be done with the payments or own the thing outright. Perhaps see if you can opt/get out of the contract (if you sign the "deal" ) & what the ramifications might be.
Thinking out loud, might be a good idea if it's a write-off for business expenses/miles? (i.e. if you're a realtor, or use the vehicle for legit business clients.)
Personally, I'd pay it off/buy it, & be debt free. If I understand it correctly, it's like renting vs mortgage, in that if you pay a mortgage, someday it will be yours & you own it. When you rent, you just keep on paying & never own it.