Originally Posted by vqsmile

I think the issue has to do with the articulation of the hinge mechanism. The trunk is pretty narrow, so to make it open as wide as possible to put larger items in, they needed the lid to swing up and away as much as possible. TO do this they used a hinge that, for lack of a better description, sort of goes "over center" if you will; moving both upward and backward. As a consequence, it is great for getting out of the way as much as possible, but when closing it, we tend to want to just push down on it with a single effort. This typically gets it "over center" again, but is not enough to go the extra distance to complete its latching. If you just learn to make your closing effort more of a two step operation, you'll find you get better results. I usually pull it a little toward me at the top (to get it "over center") and then give it the normal push down to close it; works every time.

.02