14' is overkill anyway.
My house garage is probably 12' and eeilsy could have been 14. All depends on how the garage is positioned on the house and how the land is laid out. My house sits up on top of a hill so I just dropped the floor in the foundation further. Gave me higher garage ceiling and made the driveway transition up the hill and into the garage easier. Benefit of the higher ceiling is if you want to utilize that height for storage. Draw back is if you're heating and or cooling the space.
My detached garage I did 11' ceilings except for a vaulted area in the one bar for my two post lift. My garage is heated and cooled so I didn't want to keep 14' ceilings in the entire garage. Now that it's done I wish I would have for extra storage area.