Yeah I have an autobahn. The adjunct leaflet manual specifically says it's real leather and then details some of the required "monthly" upkeep. I don't know if the se is different but I've heard it's also real leather?
We have a 2017 Q7. The leather, infotainment (especially having a click wheel and no dumb, glossy finicky touchscreen), plastics, wood, fabric, sound system, dash, door cards, rear areas, brakes, and suspension are all far better quality and better designed. The Q7 actually comes with a double wishbone front and is far closer to a sports car in balance and design than the gti/r. The front brakes are also massive 380mm 6 pots that do a great job stopping, even when towing 7k lbs! There are certainly stupid things about it, like why would you put ash trays in the back doors? Who smokes in their car? I only know two people who smoke and even they think smoking in your car is gross, lol. Also, the same stupid plastic trim that's on the outside door edge of the gti/r is on the Q7, and it's so frustrating to grab that to close the door when stepping out and feel that chintzy plastic squeak and creak in your hands on a 78k car.
I have heard there's a big difference between the entry level and top of the line q7, but I only really know the loaded premium plus and prestige models, and there's just no comparison to the autobahn gti...
It's interesting you didn't like the e92. My buddy's has an Alcantara dash, door cards, and everything is basically wrapped in nice materials. It's also pretty quiet when hitting bumps and stuff, still feels solid given the age and not at all like the mk7 limp noodle. His is pretty low mileage though. The cup holders are idiotic and break for sure, and the seat belt assistant literally never works! Haha