Vehicle Mass
From OMSIWiki
The mass of a vehicle is required for its correct simulation. OMSI always calculates the current weight by adding the kerb weight (specified in the basic physical data under [mass]) to the mass of all passengers currently on board.
Therefore, if possible it is important to use the dry weight when entering a value for [mass], thus without tank capacity, luggage, passengers and of course the drivers themselves.
The mass of the vehicle is specified in t.