This is what I've suspected, and have posted above: I don't think most Uber drivers are accounting for all of their costs.
Gas and maintenance can be tracked, but depreciation due to excessive mileage is harder. I'd make it simple and just reduce the payment from Uber by the number of miles driven * 54 cents (the IRS mileage rate for 2016).
Supposedly Uber is supposed to be working out some sort of hybrid coverage.
Uber has an insurance policy that covers the driver while transporting a passenger. I don't know all of the details, like coverage while enroute to pick up a passenger.
there are also bonus dollars at different times....like extra $50 after making 30 rides a week.
also the "surge" rates when there are more clients than drivers....could be X1.2,... X2.0...and up.
The blue book value on my 2007 Town and Country with 170,000 miles is $1500. I will clear about $40,000 this year driving for Uber with this car. Depreciation is not an issue.