Yes: the Autobot.
His alt mode was a late seventies Porche racing car.
That is the same size and design roughly that they gave BB in the movie.
Jazz was like twice the size of bumblebee who disguised himself as a VW Beetle in the G1 story, as was smaller than Jazz.
That was part of BB's character lost in transition to Bayhood...
The undersized but plucky, daring espionage bot, who needed rescuing a lot due to his lack of strength/power/combat.
Jazz was a warrior and was cool until Bay reduced him to being a crappily designed, brain dead street thug