Why promotion only for (fast) new cars?

Moin Moin! I would like to ask the question: Why are modifications and such things only promoted on almost new cars? Background: With me about a year ago it was in the room that I needed a vehicle with automatic transmission. During the research at that time we came across that there is only support for (almost) new cars. Since we have almost no free financial resources, we would have been dependent on a subsidy, the regulations of the promotion leave so pretty much no There would have been a promotion only for cars that were still worth at least 50% of the (list) new price and the maximum promotion is 9500 €. There is no car fit in that meets my minimum requirements. Luckily, I don’t need an automatic car today, that’s why it’s done for now. But I’m still busy: What if not? Besides, the need can come back at any time P.S.: That my demands are not too a The fact that I bought a car for 1000 € this year, which easily handles the fulfilment of my minimum requirements for a more expensive car, is proven by the fact that I bought a car for 1000 €.