Yes, you can deduct the mileage. As an independent contractor (received a 1099-MISC) you are considered self employed by the IRS. Because you received a 1099-MISC, you are considered a "business" owner.
In TurboTax, when asked to fill out your business profile, you would enter your name as the "business" name and your physical address as the "business" address. Then you would answer the additional questions in the business profile that apply. You are not required to have an EIN since you don't have employees and in most cases your accounting method would be the "cash" method.
After entering the business profile info, then you will have the opportunity to enter in your business income (income from your 1099-MISC) and your business expenses (including vehicle expenses-mileage)
You have
the choice of two methods, to claim vehicle expenses. The first option is
mileage. You can deduct the miles driven for business. The other option is
claiming all your actual expenses such as gas, tires, interest, etc.
