Quoting M<0><0>DSWIM !
I really like the unique design of this! I especially like the torso and legs and can see the Code Geass influence in the idea of wheels on the feet. My only minor nitpick is that I feel the arms look a bit diminutive compared to the rest of the mech. Maybe add some bricks with studs on all sides in the forearms and add some tiles to the sides of the arms?
As with my other racer mecha, I honestly didn't feel it needed arms at all, which is why they are more like long wings than functioning arms. But yeah, the forearms are a little basic compared to the rest of the design.