As commented above, the one I have is falliable as it doesn't cover the airbag but I reckon if someone is that determined then virtually nothing will stop them. Mine attaches to the rim and extends across the top of the dash, is small enough to easily slip on the floor in front of the passenger seat but when attached is visual and sturdy enough to put off people from having a go. And unlike some similar locks it will accept the thick rim of the Msport wheel. Got it from Halfords.