I think most people found it hard to drive because it seems like it should have tank controls. Forward and backward movement with the left stick - turning with the right. First time I played ME1, I hated the Mako - though on my second playthrough it's actually kind of fun. Just takes getting used to. I think everyone would have been happier if there was a super easy tutorial-esk mission where we could get used to it without being attacked by Geth constantly.