Does you OB have a moonroof or not? I've heard that moonroof opening hole requires shorter supporting members under the roof surface which may weaken the roof structure. I don't know for sure whether it's true of false. My 2013 OB does not have a moonroof, and I didn't notice that the roof itself is that thin or flimsy. However, I purchased four surface mountable rub strips and install them in between roof rack rails. They help to spread the load and serve as lateral rigidity ribs to prevent roof from warping or waving. I had similar rub strips on my previous station wagon and used them to carry loads in between the rack rails without any damage to the roof.Anybody else notice that the sheet metal on the roofs of our outbacks is extremely thin, and not really supported well? I don't know if a cat or something walked on my roof, but there's a bunch of waves / dents in it now. I don't even think a body shop could fix it; the pressure they have to apply would just cause more warping. None of my other cars have been like this...
Her is the solution if you don't mind the look of your roof with black strips from the top:I noticed the same thing on my '13. You can easily touch it and it moves like aluminum foil.
Subaru is really pushing to try to keep fuel economy up on these things (and even improve it) without giving up space or AWD. With the 4th gens being even bigger, but roughly the same weight as the 2nd/3rd gens, I'm not surprised they went thinner in the panels to pull that off.My OB is my 5th car in circulation in the last 4 years and is the only one with panels that feel that way. My Nissan and VWs don't/didn't feel that way at all. Weird.
Subaru is really pushing to try to keep fuel economy up on these things (and even improve it) without giving up space or AWD. With the 4th gens being even bigger, but roughly the same weight as the 2nd/3rd gens, I'm not surprised they went thinner in the panels to pull that off.
That said, I haven't seen any warping on the roof (I don't regularly park in the sun). Although I do notice how thin the hood is when I reach high speeds.