You don’t need to make a down payment and the fixed monthly rent includes costs such as insurance, services, tires or road assistance. The only extra cost is the fuel. Besides that, you benefit from the negotiating power of LeasePlan which, when negotiating bulk purchases with the car manufacturing makes, obtains economies of scale which result in more attractive monthly rents. With operational leasing, you don’t own the car. You are only paying to use it for a fixed period.
When you buy a car, you must finance the purchase with your own funds, becoming the owner. Your budget must include the budget for regulars’ costs such as insurance, taxes and annual maintenance. Moreover, you’ll have to cover any unforeseeable expenses such as corrective maintenance, tires, fuel or any cost that may arise. When you sell the car, the money is yours.