You want to know what happens if you can't afford the payments?

Well, the contracts are designed to run the full term.

They are not supposed to be cancelled, due to the large depreciation on a new car in the first few years.

So you need to consider if you can afford the payments over the full term. There are often penalties if you terminate the contract early.

But, whatever the case, you will probably need a car, and leasing is about the cheapest way to run a new car.