Discount on new cars for auto-entrepreneur

When we bought a car a few years ago there was a discount applied as my wife was an auto-entrepreneur.

We are now looking to replace our broken old car and once again we have been offered a discount of approx 12.5% as I am now registered as auto-entrepreneur.

I am interested to know if it is possible to get the same discount on nearly new cars or even older 2nd hand cars. Does anyone know? I have asked at dealerships without an answer.

There is a long wait for new cars (and they are damned expensive) - hence the interest in nearly new.