From my experience, there aren't many reports related to Mileage.
Check if you have access to Concur Reports (IBM Cognos Reports).
If you need a specific report you check with your Concur Admin.
Hope it helps.
So, that begs the following questions: Do you have access to Cognos reporting? If so, are you familiar with building reports?
@heskacanada Since you are an administrator, you can assign this permission to yourself. Just pull up your own profile through Expense Settings>User Accounts. Scroll down to Products, click the Reporting Tab, then refer to the screenshot below. This permission will go into effect the day after you assign it.
The aggregate number of miles traveled over in a given time. length, extent, or distance in miles. the number of miles or the average distance that a vehicle can travel on a specified quantity of fuel: the car gets good mileage.