What are the most important factors to consider when buying a used BMW?

I am in the market for a used BMW, and I want to make sure I am making the right decision. What are the most important things to keep in mind when buying a used BMW? How can I ensure that I am getting a good deal and not getting scammed?

First and foremost, always research the car's history and get a CarFax report. This will give you important information about the car's past owners, accidents, and maintenance records.

Don't be afraid to take the car for a test drive. Pay attention to any strange noises or handling issues. This will give you a good idea of the car's overall condition.

Check the car's mileage and make sure it is consistent with its age. Also, ask about any major repairs that have been done on the car.