Assuming SE doesn't go completely crazy with Au Ra, they'll probably live about as long as all the other races of allowed to love out their lives and die of old age.
Pre-Au Ra, SE said this was about 100, with Elezen living "a little longer and having a longer time for puberty".
...so about 120-ish, if I'm remembering the Vegas fanfest.
There have been a couple odd cases of people living hundreds of years, but that wasn't because of racial traits. It was from very powerful black magic (which yes, is basically world-powered thaumaturgy and could be used to accomplish the task by the best of the best).
Pre-Au Ra, SE said this was about 100, with Elezen living "a little longer and having a longer time for puberty".
...so about 120-ish, if I'm remembering the Vegas fanfest.
There have been a couple odd cases of people living hundreds of years, but that wasn't because of racial traits. It was from very powerful black magic (which yes, is basically world-powered thaumaturgy and could be used to accomplish the task by the best of the best).