[SD ///M4]

The F80/F82 M3/M4 actually came with two different trunk cargo nets, depending on the year. My 2016 M4 came with a net that stretched out flat on the trunk floor and has a connector system with six small, round plastic discs on the net that fit into six keyhole slots in the removable trunk floor, one in each corner and one in the middle on each side. There is a pouch in the rear 1/3 of the net. It works perfectly to secure a large pizza directly in the center of the trunk without any movement.

My wife's 2018 M3 came with a different net with four plastic hooks in the corners that attach to the D-rings in each corner of the trunk (my M4 also has these D-rings). This net doesn't lay flat on the trunk floor but sits an inch or so above the trunk floor. You can't secure a pizza box, and it doesn't have a pouch. My wife liked my cargo net system better, so I found the same net that's in my car, bought the six keyhole slots, drilled holes in the removable trunk floor, and installed those, so now we both have a choice of which net to use.

(Edited to reflect that the 6-hook cargo net has a pouch while the 4-hook cargo net doesn't have a pouch.)