Originally posted by: Garet Jax
This will not save you money.
When you import the car (which you will, if you want to register it, which you will if you want to insure it), then they will tax you accordingly. In MD, they will charge you the difference between their state tax and the tax from the state you bought it in. For example, MD = 5%, PA = 3% (purely made up numbers), MD will charge you 2%.
There is no way to save tax on buying a car out of state in MD I would assume all states are similar.