AUTOMOTIVE SENSE: The fuel consumption of any passenger automotive c...

AUTOMOTIVE SENSE: The fuel consumption of any passenger automotive c...: "The fuel consumption of any passenger automotive car claimed always depend on various special factors which normally cannot be complied by ..."

The fuel consumption of any passenger automotive car claimed always depend on various special factors which normally cannot be complied by even those people who are responsible for certifying the consumption [number of kilometers]. Is there any way to make it more sensible and justifiable to enable a prospective buyer for buying an appropriate product with proper justified factors.