Has an AFL game ever ended 174-71?
Exactly once. On July 29, 2006, St Kilda beat Richmond 174-71, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 174-71 in league history.
That makes 174-71 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 175-71 has happened never and 174-72 has happened never.