4th pedal is Hand brake pedal. Seen it on Honda Legend previous version and few mercs. If you mean by actual brake and not foot rest. B It needs time to get used to, but to me its just stupidly placed there so that to make the armrest area cleaner/more space without the hand brake there. Its actually a nuisance in the long run and for some weird reason, the car has a different button to release the handbrake. Like those clutch wire on the side of the dashboard. Thats an even waste of time. Not that responsive in emergency situations where you need to press both brakes.