, each team may have no more than two cars available for use at any time. Each driver may use no more than four engines during a championship season unless he drives for more than one team. If more engines are used, he drops ten places on the starting grid of the event at which an additional engine is used. The only exception is where the engine is provided by a manufacturer or supplier taking part in its first championship season, in which case up to five may be used by a driver. Each driver may use no more than one gearbox for six consecutive events; every unscheduled gearbox change requires the driver to drop five places on the grid unless he failed to finish the previous race due to reasons beyond the team's control.