last week i met a person who were having japanese car 1500cc and were claiming that he is getting average as 17km/l within city with ac and 22km/l with ac on motorway.
I insisted to see the car and his odo meter as well. And then he started talking like here n there.,,,,,,,, means, he was just trying to relay untrue comments.
Similarly i have read many people claiming that they are having extra ordinary mileages but all with no proofs. These are just stories to tell. This is what i believe frankly.