Disadvantages of Leasing
The only disadvantage to leasing is a slightly higher payoff vs. a retail installment loan if you decide to terminate the lease early. Remember, the bank has guaranteed you a future trade in value, but has given you the credit for it at lease inception. So if "you" decide to terminate the contract, their trade in value is no longer guaranteed. So, the payoff calculation is the remaining payments, minus the unpaid interest, plus the residual value. It won't be more than what a retail installment contract would be at that point in the loan, but it will be slightly higher.
A common misconception about leasing is that it is only for drivers who drive 12000 to 15000 miles per year. But, you can basically tailor a lease to have any annual or total mileage you desire. But, even if you go over the allotted annual mileage set up in the lease, the mileage penalty is still less, in most cases, than the actual vehicle depreciation. This is good for the lessor.
Lastly, there is a common misconception that there are strict "excess wear and tear" guidelines. In most cases, each lessor will have an amount that they will waive relating to excel wear and tear. This provides additional savings for the lessor as if they had purchased and traded, any wear and tear would result in a deduction from the appraisal value. So, again, this is good for the lessor.
We stand behind the belief of many financial advisors: "Unless you plan to keep your vehicle 6 years or longer and you must finance because you can't afford to pay cash, you should at least consider leasing."