Hi bibboom20-gmail-!
Welcome to QuickBooks Community. Let me share some details about it.
You can add the expenses related to using your vehicle for business in QuickBooks Self-Employed. For gas charges, you can categorise them as Gas and fuel.
The mileage tracker is when you travel for work and plan to write-off your trips. You can use both, however, you'll want to seek some guidance from your account if you're unsure.
I've added some links you can check. These will show you how to categorise and track mileage properly:
Need more help? Please reply to this post. Take care!
