I own a 2013 FR-S.

Unless this is rebadged, idt they were sold under the Toyota brand in the US until I think 2016. I could be wrong, of course, but this looks newer.

Regardless, outside of whatever mods they've got, mine is as old as they get and has no problems at all (other than the damn door checks lol), so age alone isn't a reason to throw money at it.

At that age? That's still a newish car. Newer than anything I've owned. I drive a 30 something year old car and never had any car troubles.