You could always create an expense account for Vehicle Expenses, and then create subaccounts for the various types of vehicle expenses incurred. Your Vehicle asset account and its corresponding depreciation account wouldn't be impacted by these expenses (and shouldn't be). You could then create a custom report for the vehicle to show only the asset account, accumulated depreciation, vehicle expenses, and vehicle depreciation.  If you know how to calculate and record depreciation without using the FA system, it's not necessary to use it. You can do this all directly in QB Pro, Essentials, or Plus.