In Texas, If I cannot claim miles on my Taxi service and I do not want to look for all my gas/repairs tickets, is their a standard amount I can expense?

Why can you not claim the per-mile deduction?

Your choices are the per-mile deduction or actual expenses. Typically, actual expenses is only used if the vehicle is 100% business use. But that's not a hard fast rule.

Once you use actual expenses for the vehicle (even if it's the first year you used it for business), you can't switch to standard mileage rate. You must continue using actual expenses as long as you use that car for business.

@egarza735 said " In Texas, If I cannot claim miles on my Taxi service".

That just not true.  IRS rules are not "by state". They're the same in all states. 

Texas does not have state income tax.

I think OP meant Taxes, not Texas.