Downgrade 2017 models to OS X el Capitan?

[Highdom_MAc]

I'm going to buy a 2017, 15.4 inch, i7 Quad Core 512SSD, Macbook Pro with OS X mojave already installed. My question is if I can downgrade it to OS X el capitan (or sierra). I think (but i'm not 100% sure) this model came out back in june 2017 with High sierra.

Can I in this case install el capitan?

Thanks!
(Merry Xmas to everyone LOL)

 

[Peadogie]

According to everyman.com it came with Sierra.
https://everymac.com/systems/apple/...-mid-2017-retina-display-touch-bar-specs.html
Merry Christmas. 🎄

 

[chabig]

That machine can run Sierra, but not El Capitan. The last MacBook Pro that could run El Capitan was the mid-2015 model. (Answer from MacTracker)