A friend who is a Service Adviser at an FCA dealership told me demo cars are provided if available and only to customers that purchased extended warranties. Otherwise, the salesman can volunteer the use of his demo (if assigned) to one of his customers. He said that is rare because the salesman would never have use of the car.What about rental cars? If your car is in the shop for more than a day what do dealers normally do about warranty customers being stranded without a car?
All this obviously can vary by dealership, but he said that is common practice.