I'm no expert but my guess is once the initial sales surge fizzles cost will go down. Rates are not really a good gauge of cost. Is the price the same for both the lease and financing? If so, the difference is likely in the residual value on the lease. Either way the dealer needs to make a profit. My advise would be to wait it out if you can. How much the price goes down will likely have to do with how successfull sales are down the road. 5.9% is really not that bad, challenge your bank to do better.