Vehicle differential and vehicle

A vehicle differential mounted on a vehicle, the vehicle differential comprising:

• a differential case that receives drive power of a drive source and rotates;
• a pair of side gears arranged in the differential case in a coaxial manner with a rotation axis of the differential case;
• a pinion gear that meshes with both side gears of the pair of side gears;
• and
• a differential limiting mechanism provided to at least one side in a rotation axis direction,
• wherein:
• the differential limiting mechanism has:
• a plurality of friction plates arranged on an opposite side to the pinion gear, with respect to at least one of the side gears, in the rotation axis direction;
• and
• a pressing member arranged on an opposite side to the at least one of the side gears and interposing the plurality of friction plates therebetween, in the rotation axis direction and holding the plurality of friction plates together with the at least one of the side gears,
• each of the side gears located on the one side in the rotation axis direction has:
• a gear section that meshes with the pinion gear;
• and
• a cylindrical section that extends from a radially inner portion of the gear section with respect to the rotation axis toward an opposite side to the pinion gear and a cylindrical axis of which is coaxial with the rotation axis, and
• an outer circumferential portion of the cylindrical section meshes with an inner circumferential portion of the pressing member via a helical spline.