Well I hate to burst bubbles for those who live in Canada, and maybe even in the US.
December is no worse or better than any other month, nor is the first week better than the last and so on.
Everything is logistical. For example at the begining of the year the lease rates are higher because the residual value is higher, as the year goes on the rates come down as the residual value comes down. It is the same thing for financing, you may pay a higher interest rate at the begining but by the end of the year when interest is lower and there is more incentive, you will find the only difference that it ends up being is the difference of when the car first came out to when you are purchasing.
Ex. Soul was released in May at 3.9% over 60 months. No other financing incentives. Now it is 2.9% for 60 months with $500 incentive when financing.
So now you save 1% and get $500 back, but those who have purchased when it first came out are already at a lower value, but for trade purposes in 5 years you balabnce out.
People tend to forget when you trade in a vehicle in 2015 they dont care when it was bought only that is a 2010 wit X amount of milage on it.
As for if you live in Canada, the monthly programs tend to trend towards a bi monthly basis, so what you see in Nov, will probably be the same in Dec, unless they feel sales are slipping on a certain model, in which they will try to up the incentives on the model. I don't see that happening with the Soul or the Forte Koup as both are selling well. If you want I can update the current incentives each month under the Scarboro Kia sponsorship link.
Cheers,
SOUL4U