Weather I'm in practice or online, I cant control the throttle. I can steer the car and all but I can't use the throttle, brake, or reverse. I have changed my settings, restarted everything and it still won't work. Is this happening to anyone else?
At the first menu screen go to the options section and see how your controller is set up maybe it was changed somehow and you need to change it back.
Edit: as Royalefatale said: if you are driving online at Daytona you must hit start a couple times during the countdown...it's a problem with the game, not you.