Uber doesn't know your non-trip mileage, they only track the mileage from when you pick up the rider until you drop them off. You may read about plugging in an average amount of miles using a day, week or month where you have tracked the mileage accurately. Unfortunately, the average method won't work for Uber driving since the number of trips and therefore miles can vary greatly from day to day. If you don't have odometer readings annotated in a notebook or on gas receipts, you will need to go thru each ride and record the mileage reported by Uber. For the future, the easiest way to track mileage is to note your odometer reading when you go available and again when you've stopped for the day; the difference between the numbers would be your daily mileage. If you stop driving to do personal errands and then resume driving, the in between mileage while running errands cannot be included in your mileage for the day.
