Business Mileage Deduction

Are you self-employed or are you a W-2 employee?

Can I deduct job-related expenses on my tax return?

Sorry---W-2 employees cannot deduct job-related expenses on a federal return.  Job-related expenses were eliminated as a federal deduction for W-2 employees by the tax laws that changed for 2018 and beyond.

I am self-employed. Use vehicle for managing own rental properties

Techically, it would depend on when you drove to the gas station. If you did it persuant to a trip to a rental property, then it woud be deductible. But if you did it on a trip to the grocery store, it would not. You can only deduct the mileage incurred while traveling to see your rental properties.