“Nothing Is Impossible Weeks” Action by Toyota

As part of the current “nothing-is-impossible-weeks” campaign, Toyota offers up to €4,000 via DAT, for example, in the case of the purchase of an Avensis (new car) for the second-hand one. Does anyone have any experience with this action, especially with regard to the feasibility of the €4,000? The “up to” allows me to suspect very strict to unrealistic standards on the part of Toyota, which are almost impossible to meet. And if I do, I go from a rather meagre discount for the new one. and out.