From a sales perspective = not a fail. GT 5 should sell a minimum of 8 million sales ltd. Maximum is anyone's guess.
From a review perspective = not a fail. High 80s to Low 90s on metacritic.
From a racing game fan's perspective = not a fail. Best racing car game ever made.
From a non-racing game fan's perspective = Fail!!! Racing games do not fully capture the real life experience of driving a car. Racing games are dull and boring.