Zero interest is not necessarily a scam, but you do have to have almost perfect credit and if you take the zero interest option none of the other incentives apply. It's not just in Canada -- dealers here are offering it, too. Actually, it's the car manufacturers desperately trying to move inventory; car sales are in a big slump/

The way I look at it -- you may not own the car for the entire lease. Therefore, you may not pay all the interest anyway. If you take the rebate instead, you know you've got the money no matter what happens to the car.