My 33 only gets 300-320kms out of every tank, but when I go to fill it, its never fit more than 50-55 litres max into the tank.
On the other hand, my b/f's brother has the same year 33 as me (both identical) and he gets 400-500 kms out of every tank..and he thrashes it everywhere!!! Oh - and he has a fuel light, I've never seen a fuel light come on in mine, doesn't matter how empty I run it!!!!!