Official Mileage

Hmmm, who owns the official mileage figures that the auto dealers provide when you buy a new car. I recently bought a Toyota Rav 4 and have been very pleased with the car. It was bought with a lot of factors in mind but one of them was the "official" mileage figures provided by Toyota. I had researched the car on line and found that most people did not believe the official figures, so even before I bought the car i had some insight into the fact that the official figures were, shall we say, dodgy. But little did I know they were as dodgy as they actually turned out to be. So who is looking out for the consumer here? As far as I can tell, there is no one. In fact, it would seem that the auto manufacturers can provide whatever figures that they want and no one actually cares at all! What about you - have you had figures misquoted? Did you buy a new car where the figures were significantly wrong? What did you do about it?