You still pay for any extra mileage and damage. For this reason I don't recommend open-end leases, even though the monthly payments may be lower. Each leasing company will have their own customized contract, and you'll need to read each one. If you have trouble reading small print, now is the time to buy a magnifying glass, you'll need it. Most contracts forbid travel out of the Continental US, while others may limit interstate travel.
Some contracts require more insurance than normally required in an installment loan agreement.
Take a look at a Mercedes-Benz Credit leasing agreement . If all leasing contracts looked like this, most leasing fraud would be eliminated. Thousands of dollars can be lost by misinterpreting a term or calculation contained in the contract. A hundred dollars spent on legal advice at this time can buy you peace of mind for the duration of your contract. You'll be wise to develop your own basic knowledge of leasing contract terminology, calculations, and fees.