At an assumed 8% tax your payoff is 20k. So you’d have $800 or more positive equity if a Kia or Hyundai dealer or Autonation or Lithia matches/beats that Carvana offer. Click here to follow those links and get more offers.
There are also Kia and Hyundai brokers such as @Jeff_BeachCitiesAuto for examples in the Marketplace who can take the Forte lease on trade and lease you a new and larger vehicle.