Click on the "Federal Taxes" tab on the top In the middle of the page, you should see a line with "Self Employment Income/Expenses" and an "Edit" button Click on the "Edit" button Scroll down and you should see an "Expenses" section with a "Vehicle - XXXXXX" under it with an "Edit" button Click on the "Edit" button and follow the prompts on the screen.  Eventually you will get to a checkbox that says that vehicle is the only car you have for personal use ... View more

Click on the "Federal Taxes" tab on the top In the middle of the page, you should see a line with "Self Employment Income/Expenses" and an "Edit" button Click on the "Edit" button Scroll down and you should see an "Expenses" section with a "Vehicle - XXXXXX" under it with an "Edit" button Click on the "Edit" button and follow the prompts on the screen.  Eventually you will get to a screen that asks for the vehicle mileage ... View more

The two types of vehicle deductions you may take are standard and actual deductions.  The standard deduction is based on mileage driven while the actual is based on the expenses you listed (gasoline, insurance, maintenance, etc.)   It sounds like you selected the standard deduction.  You may revisit the vehicle section and select actual expenses to enter the expenses you listed and TurboTax will help you select which one gives you the most money back. ... View more