Why the title?
It wouldn't have hurt just to add a 4 at the end of the title? I'm a long time massive fan of this series so I know this is the 4th movie, but people who want to get into the series wouldn't they confuse this with the first movie? it has happened to me, I've seen friends who want to buy all the movies and they bought this one first thinking it was the first movie in the series and I've had to correct them saying no the first one is called ''The Fast and The Furious.''
Maybe, I'm nitpicking a little, but yeah honestly why couldn't they just add a 4 at the end of it?