I seems that they just slap any old name of Bay's TF's with without much though...

Mercedes would never let us make their car into a bad Decepticon. Car company's really frown on that - I can't say what the game company and comics do that's their own thing. They don't have the same constraints movies do. It's Carly's car.
Hasbro apparently is all about the money.
so an alien robot takes the disguise of an Italian car, with an italian number plate.... but can't pick up an italian accent?