My cousin who has worked as a finance manager at 3 different dealerships says, in general, that there's not much difference between buying a new car and leasing a new car. It sucks to turn in the leased car after your term ends because you feel the impact of having to replace it with something else. What most people don't realize or feel is the huge depreciation in value that happens when you drive a new car off the lot.
Don't be fooled into thinking that you are building or have equity in your new car that you purchased. Your lucky to break even with the depreciation after 3-4 years of payments assuming a 5-6 year loan and little down payment. In fact, the dealership will try to sell you gap insurance in case you wreck/total the new car that you bought and you still owe more than it is worth (a common occurrence). This probably becomes more likely with the more expensive the car is.
I've done both. Depending upon the market for used cars, the bank or dealership that you are leasing the car through may practically beg you to keep leasing the car or buy it out. Our bank made us three different offers to get us to keep the car instead of turning it in. I should've thought more about negotiating the buy out amount on it. We had a 2008 Volvo s60 and the buyout after 4 years was about $14,500. At the time, it was a $35k car new. We kept it in such good shape and with low miles that we may have been able to buy it out and make a profit by reselling it. Of course, what was the hassle factor going to cost us in dealing with all that?
In the end, I didn't want to take out another loan to pay off the buy out amount and we bought a nice used car from a friend who gave us a great deal. Still have that car today. Also Volvo seems to have a poor reputation for service costs once they get several years old.
My cousin's point was most likely that after 3-4 years of leasing you may have to turn your car in and have nothing to show for it but after 3-4 years of making payments on a new car that you purchased, you may be lucky to have any equity in it given the huge depreciation hit that you take.