I work for DoorDash. Where do I enter my vehicle expense information? What section would i find that in?

You will enter your vehicle expenses in the expense section for Schedule C.  To enter your vehicle and other common business expenses in TurboTax Online:

1. Open or continue your return.
2. Navigate to the Schedule C section:
   • TurboTax Online/Mobile: Go to Schedule C.
   • TurboTax Desktop: Search for Schedule C and select the Jump to link.
3. Answer Yes to Did you have any self-employment income or expenses? and answer the questions until you get the Select any expense categories you have screen.
4. Select your expenses, then Continue.
   • If you've already worked in this section, select Edit or Review next to your business.
5. Then select Start or Edit next to an expense type that you had.
6. Enter your expense description and amount, and follow the onscreen instructions.

For additional information see the following TurboTax Help Article:   Tax Tips for Uber, Lyft, and Other Car Sharing Drivers and, 

Self-Employment Taxes in Today's Gig Economy