<p>I would think, based on the multitudes of posts I’ve read here-that if your essays, recs, numbers all stay good or improve, that you have a good shot at mech eng. But I can’t emphasize enough that if CMU is a strong choice for you, to also request the other colleges (MCS, H&SS, IS-at least) consider you too, as a backup. Why hang everything on just one chance when you can have 5.</p>