You can estimate your uber miles for 2017 if you know the total miles you have driven and can estimate the miles you drive for other reasons.
If you don't know your total miles, look at receipts for repairs or oil changes. Your odometer readings will be on these invoices. You can also review your bank statements for gas charges and calculate with your average of miles-per-gallon.
To estimate your non-uber driving, use internet tools to determine the miles you drive. Google search the miles from your home to office, home to common shopping, and home to other places you regularly go.
I suggest you print and keep all of these searches as documentation of your miles driven for business purposes.
