An adjustable vehicle luggage compartment attachment system comprises at least one bracket having a top end and a lower end. The top end receives a luggage compartment and the lower end mounts on the vehicle at the rear window or the trunk. At the top end of the bracket, at least one horizontal beam may be used to mount the luggage compartment. At the lower end the bracket may be releasably, fastenable and removeable from the vehicle and said luggage compartment using attachment mechanism such as a suction cup or other soft releasably, removeable attachment mechanism. The bracket may be static or expandable vertically, horizontally or both.