[porsche tech]

Guess I’m wrong:

According to the most recent data from the National Automobile Dealers Association (NADA), the new-vehicle department of a car dealership accounts for about 58% of a dealership's total sales but less than 26% of a dealership's total gross profit. In addition to car sales, that figure also reflects profits from finance and insurance (F&I) products sold on new cars. That means such things as gap insurance, alarm systems and extended warranties.
The used-vehicle department represents only about 31% of a dealerships total sales, but profit is close to that of the new-car department: nearly 25%. of a dealership's gross profit, according to NADA. In addition to car sales, the figure also reflects profits from F&I products sold on used cars.

So where does the majority of a dealership's profit come from? It's not from car sales, at least not directly. It's from the service and parts department, which accounts for the other 49.6% of the dealership's gross profits, according to NADA.