I bought a 2017 outback 4 months ago. I have 4050 miles already. When am i suppose to have my first oil change?

Now would be good but you could go to 6,000 which is the Subaru recommendation. You have a service schedule in your glove box along with the owners manual.

it's should in your owners manual. see below and copy and paste. As for me I would have changed it at 4,000 miles...

https://www.subaru.com/owners/vehicle-resources.html? modelCode=2017-OBK-HDF

Follow the owner's manual recommendation. Are you burning any oil??

Hi Mark !

COMETGUY61-. I have not heard anything about oil burning issues on these new models. Hopefully, Subaru has fixed these issues.

My 2015 Subaru started burning oil like crazy when it passed 5,000 miles.

Since it's synth I'd simply go by when it gets dirty, recommending 2- 4x/yr regardless of mileage. I also would seriously think about upgrading to 5w30 synth for summer, as the OE 0w20 is too thin except for winter...timing chain start-up rattle be damned!