Over the same 5 year period on a finance at $900/month costs you $54K. If you lease for 36 months on one car and then do another lease for 24 months (to make it apples to apples in timeframe) for $900 you spend that same $54K. But at the end of the finance you have probably $25K in equity and no car payment. With the lease you have nothing. That's why with the .9% financing you don't have to chew down the interest rate over time or have to put down a payment to bring the payment down--it's a great deal. I could see it the other way around when rates were at 6%--you could lease the same car and have a smaller payment vs. finance.