Looking at your dealer's website, the lifetime powertrain warranty shows up in big letters across the screen, but there also is a small pop-up yellow window that restates this offer AND has the dealer's name. We just bought a 2019 in the Atlanta area and none of the local dealers mentioned this. AFAIK, for warranty repairs the dealer is reimbursed by Subaru of America, so it costs them little or nothing. That's why your warranty repairs can be completed at any dealership, not just the one where you purchases.
Therefore, if the lifetime powertrain warranty really was a nationwide offer, it would be reimbursed by Subaru of America and every dealer would be trumpeting it. There would be no reason for them not to. The fact that other dealerships don't say "lifetime," and instead say "5 years or 60k miles" suggests this offer is unique to your dealership, implying they would pay out of *their* pocket for powertrain repairs after 5 years/60k.
If that is the case, I cannot see how they can claim this warranty would apply nationwide UNLESS they are prepared to reimburse another dealership's parts and labor costs for working on the powertrain after the 5 years or 60k miles. That seems very unlikely, but I always welcome pleasant surprises!:laugh:
I am not a lawyer and this is not legal advice. If it were me, I would not be content to capture screenshots of the website. I would accept this promise only if the dealership provides written documentation of the offer that clearly spells out all benefits and how they will be provided, as well as (as others in this thread have counseled) the exceptions and limitations. If the document has a clause somewhere stating that the buyer agrees to submit any disputes to binding arbitration and waives his/her right to other remedies -- such as the ability to sue -- I would interpret that as a warning that they want me to be at a disadvantage.
Maybe it's a great deal. Caveat emptor. As others have pointed out, if you really want an extended warranty with specified terms that you know WILL be accepted at any Subaru dealership, Subaru's Gold Plus extended warranty is available. Check the many other threads for the pros and cons.