Is my bf's behavior abusive?

In the past year or so, my bf's behavior has been changing in a way that scares me.
When we argue or he gets upset, which happens increasingly often and easily, he slams doors so hard it hurts my ears, drives like a madman, talks to me in a belittling and very disrespectful manner, and overall makes me feel sick to my stomach. If the argument happens in sight of other people, he acts nice when they ask and makes it as if I am the bad one.
I have talked about this with him and it has not changed.
 
We are near marriage and this is giving me great pause now. Please do not give blanket advice - this is a serious relationship of 4 years. We have not had issues like this before.