Dr.Monzer Kahf, a prominent economist and counselor states: “what determines permissibility of taking cars issued on lease is not the amount of the difference (although there must be no overcharge above the market) but the nature of the contract. If it is a loan any increment above its principle is interest that is haram. If it is a lease/purchase or installment sale (whereby the bank buys the car and rents it to you or sells it to you) then it is permissible even with the higher prices.”