The ornamental design for a rearend of a motor vehicle, as shown and described.
FIG. 1 is a front perspective view of a rear end of a motor vehicle;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is an elevation view thereof taken from the left side, the right side being a substantial mirror image thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The broken line showing of the rear end of a motor vehicle is for the purpose of illustrating portions of the rear end of a motor vehicle and forms no part of the claimed design.