When you buy out a lease, you’ll be asked to pay the price set at lease signing for the car’s “residual value” (the predicted value of the car at the end of the lease). If the predicted residual value is more than what your car is actually worth at the end of your lease, it’s probably better not to buy it. If the residual value is less than the car’s true current value, then it could be a good idea to buy out your lease.