If i use my own vehicle for work should the company reimburse me for maintenance costs?

This isn't really a tax question, although the tax rules provide a mileage rate that many employers use to reimburse for vehicle use. That rate, includes all costs for the vehicle travel/use (maintainence, fuel, insurance, etc.) except for tolls. parking and such and is allowed as a reasonable amount, only requiring record keeping for distance used. It is what is called a "qualified" reimbursement plan so the money paid does not become income to you. (Understand, if he pays you a car allowance or such, it is income). Your personal arrangement with your employer is a matter of your own with him. It is not required by law that you receive any remibursement for anything.