Vehicle with pedals comprising a saddle, a front wheel, a supporting body or a frame, a pair of pedals (5, 5') and a pair of rear wheels (3, 3') and an oscillating mechanism between the supporting body of said front wheel and said rear wheels (3, 3'), said oscillating mechanism realizing the equilibrium of the vehicle with pedals and allowing the inclination of the rear wheels (3, 3'), consequently determining the steering of the vehicle with pedals, the oscillating mechanism comprises a rod pivoted through an axis and configured as a cursor to move the axis to the right or to the left depending on the inclination of the supporting body and of the user causing the rotation of the rear wheels (3, 3 ') around their vertical axis and synchronously with each other, said vehicle being characterized in that, in combination: - the rear wheels (3, 3') are connected to each other by a rib configured to guarantee stability and balance at the vehicle with pedals, - a kinematic mechanism is positioned on the front wheel and comprises the pedals (5, 5 ') each of them integral with a toothed crown (12, 12 ') and a pair of pinions (13, 13') connected to the respective toothed crowns (12, 12 ') by means of a chain (14, 14'), - the rear wheels (3, 3') partially overlap the front wheel in the axial direction, - the saddle is steadily connected to the upper part of the supporting body in a rearward position with respect to a vertical axis passing through the center of a horizontal segment connecting the pedals (5, 5') and is inclined with respect to the vertical axis passing through the center point of the horizontal segment of the pedals (5, 5') of an angle (α) comprised in a range between 15° and 35°, - the front wheel swings along an axis passing through the center of the front wheel and through a rod (4") of the oscillating mechanism, resulting in this axis almost parallel to the ground. mechanism realizing the equilibrium of the vehicle with pedals and allowing the inclination of the rear wheels (3, 3'), consequently determining the steering of the vehicle with pedals, the oscillating mechanism comprises a rod pivoted through an axis and configured as a cursor to move the axis to the right or to the left depending on the inclination of the supporting body and of the user causing the rotation of the rear wheels (3, 3 ') around their vertical axis and synchronously with each other, said vehicle being characterized in that, in combination: - the rear wheels (3, 3') are connected to each other by a rib configured to guarantee stability and balance at the vehicle with pedals, - a kinematic mechanism is positioned on the front wheel and comprises the pedals (5, 5 ') each of them integral with a toothed crown (12, 12 ') and a pair of pinions (13, 13') connected to the respective toothed crowns (12, 12 ') by means of a chain (14, 14'), - the rear wheels (3, 3') partially overlap the front wheel in the axial direction, - the saddle is steadily connected to the upper part of the supporting body in a rearward position with respect to a vertical axis passing through the center of a horizontal segment connecting the pedals (5, 5') and is inclined with respect to the vertical axis passing through the center point of the horizontal segment of the pedals (5, 5') of an angle (α) comprised in a range between 15° and 35°, - the front wheel swings along an axis passing through the center of the front wheel and through a rod (4") of the oscillating mechanism, resulting in this axis almost parallel to the ground. - the rear wheels (3, 3') are connected to each other by a rib configured to guarantee stability and balance at the vehicle with pedals, - a kinematic mechanism is positioned on the front wheel and comprises the pedals (5, 5 ') each of them integral with a toothed crown (12, 12 ') and a pair of pinions (13, 13') connected to the respective toothed crowns (12, 12 ') by means of a chain (14, 14'), - the rear wheels (3, 3') partially overlap the front wheel in the axial direction, - the saddle is steadily connected to the upper part of the supporting body in a rearward position with respect to a vertical axis passing through the center of a horizontal segment connecting the pedals (5, 5') and is inclined with respect to the vertical axis passing through the center point of the horizontal segment of the pedals (5, 5') of an angle (α) comprised in a range between 15° and 35°, - the front wheel swings along an axis passing through the center of the front wheel and through a rod (4") of the oscillating mechanism, resulting in this axis almost parallel to the ground.