This macro is designed to simplify the process of searching and purchasing rare cars at auction in the game Forza Horizon 4. It works this way: go to the «Auction Room» section, then in the «Search for cars» section, specify the desired make and model, for example, «Ford Capri FE» and confirm your request. As a result, an auction window will open, where, most likely, there will be no offers, since this car is exclusive. After that, press the Escape key to return to the car search menu.

Important: before running the macro, make sure that the desired location is highlighted in the «Search for Cars» menu, either using the mouse cursor or using the navigation keys. Only after completing this step can the macro be activated. 

After completing all these steps, you can leave the macro to work while doing other things, checking from time to time whether you managed to catch a rare car.

Personally, with the help of this macro, I managed to purchase more than ten rare cars from the Backstage, without spending a single pass.

P.S.: If you want, you can test the macro on any affordable budget car — it will automatically buy the first car from the list. Therefore, before specifying the desired purchase parameters, look at the available offers at the auction so as not to overpay for some model, for example, Ford Bronco.