A gear lever for motor vehicles is provided, of the type including a lever body, a grip, a block and a rod. The lever body defines a main axis and is configured for being associated to a gearshift device of a motor vehicle. The block is arranged to be displaced between an operative position and an inoperative position, respectively, for blocking and releasing the lever in or from a given gearshift position. The rod is slidably mounted within the lever body, and connected to which is said lever block, and which is arranged to be governed via a control member positioned on the lever body or on the grip for shifting the block from the operative position to the inoperative position. The lever is also height-adjustable.