Quit job to persue another on what is now false pretenses

[Questionfrompa]

I was approached to leave a very good job that I was at for 6yrs by a very reputable corporation. One of the selling points to take the new job without a large pay raise was that I was going to get paid mileage.
Fast forward 7months on the new job.. I am told that the company no longer wants to pay me mileage like I was told and now they just want me to put my gas and oil changes on my corporate card.
I did not get mileage reimbursement written in my contract. However, I was reassured that I would "make a lot of money on mileage and to not focus on the mediocre pay raise".
I still have my job but clearly am unhappy that I'll be out nearly $12,000 a year.
Do I have an argument or can they get away with this?

 

[cbg]

If you do not have a legally binding and enforceable contract that guarantees you mileage then

Do I have an argument No

or can they get away with this? Yes

 

[Betty3]

There is only a couple of states that require mileage be paid & yours isn't one. Therefore, without a binding contract guaranteeing mileage be paid they don't have to pay it. Sorry.

 

[ElleMD]

If they are paying your actual mileage and gas that is more than fair. They do not even have to pay those expenses.

 

[disagreeable]

If you wish to keep the job I suggest you move. I am disabled. As my disability worsened I went from mid level management to being a truck driver. I then progressed to being a linehaul truck driver as I worsened. When my company had mass layoffs, I had to move to Little Rock. Once there, when my spouse was on vacation and we were looking at homes, I was again caught in another round of layoffs and had to move to OKC to keep a job I could do. Instead of a home, we spent her vacation actually vacationing. Sure enough a couple months later I was again laid off. I came back home to my family and spent the winter on UI. My employer had a change of OPs again and I transferred from OKC to 14 miles down the road from where I joined the company. I worked there until I became too disabled to work. It appears time for you to decide. I rented furnished apt's in each city living with people who could not afford nice apt's to conserve the extra expense.