Do not fill fuel tank completely: Why the govt has advised this to car owners

If you've ever visited a fuel station to fully top up your car, scooter or motorcycle that has been running on reserve, you might have noticed that your vehicle gulping up more petrol/diesel than the OEM claimed fuel tank capacity. In a new circular dated March 6, 2023, the Ministry of Consumer Affairs, Food and Public Distribution has advised vehicle owners to not fill the fuel tank completely.
As per the circular released by the Ministry, the Legal Metrology Division received representations from Petroleum Dealer Associations regarding wrong tank capacity mentioned in service manuals of two-wheelers and four-wheelers. It is claimed that the fuel tank capacity mentioned in the booklets is usually 15 - 20% lesser than the actual volume.

The reasons for the additional spare volume include some security measures, including -

The ministry has urged automobile manufacturers to advise motor vehicle users to not fill the fuel tank up to the brim, instead, fill it within the declared less quantity. In the past, many incidents have been reported of car owners being involved in an argument with fuel pump attendants after getting a fuel tank of fuel and realizing that the volume filled is actually higher than the fuel tank capacity mentioned by the OEM.

Do you think vehicle manufacturers need to create awareness on the matter and mention both - the maximum amount of fuel that should be filled in a respective car, scooter or motorcycle as well as its full tank capacity? Let us know in the comments down below.