Is there any benefit to tracking miles driven if I get a stipend?

I recently (this month) started a new job in property management that involves me driving all over my metroplex area to different properties that we manage for repairs, restocks, safety checks, etc. Some days I drive over 150 miles/day. I’m on salary, paid a set amount twice a month, with a stipend specifically to cover gas expenses included in each paycheck. My employer offers reimbursement if I go over the stipend that they provide, but that does not seem likely with what they’re already paying, so I don’t plan on tracking miles driven. My question is whether there is any other benefit for tracking miles in this specific case. Would I even be able to get any kind of tax benefit for tracking? We don’t have company cars, I use my personal car for all travel. Thank you, sorry if this is a dumb question. I got confused when researching my specific scenario.