They newer ones have a timing chain, no belt, that never needs to be replaced. The head gasket was an old problem. Here is a link that gives some maintenance schedules.
http://www.cars101.com/subaru/maintenance-2017.html
I have a 17. It is a Limited. Had a 03 Honda Pilot before. No kids so it just the wife and I now. We "plan" to do some traveling so we wanted something that was comfortable, could hold lots of luggage, and get at least 30 MPH. I have to say, I struggled with the OB at first. The Pilot was a dream machine, just not as many bells and whistles and gas mileage was not so great. Here are the things I generally do not like - note that I am old car guy so I am kind of picky:
1. Seat is hard as a rock - seems like a gazzilion adjustments - takes a while
2. The electronics are dazzling and the controls to turn something off are down to the left, very unhandy
3. Little bitty buttons for the radio - hate that
4. Don't start you OB and then try to put something in the back in hatch - has to be off
5. the clock and temp are in terrible places - I have to look to the right and down instead of straight across - if you have sunglasses on, it is a real struggle
6. Wish I didn't have to get the moon roof - a waste for us, maybe we will use it this spring
7. Not much storage in the front console area. get your bride's drink and yours, maybe a cell phone and you are done. then it is go to the door for storage.
8. Owners manual is like an old Chicago phone book. Good luck with that
9. The wind seems to bother it much more than the Pilot on the same roads.
10. It is very responsive in steering - a little movement goes a long ways - see # 9
11. the first time my wife got in to drive it out of the garage it goes through whistles and beeps and every colored light you can imagine. Just waiting for the jet engines to kick in.
12. Lots of features we will never use like rock climbing
13. Less than 5K so far and gas mileage isn't what we expected. Average since birth is 26.1 as of yesterday. Took a short trip in wind and wow does it affect mileage. Hoping to get 32 on the highway.