[DobbysGamertag]

Have to say this:

pawn Код:

for(new i =0; i < MAX_VEHICLES; i++)

That loops through ALL vehicles...

Why not use foreach?

pawn Код:

foreach(Player, pid)
{
    switch(GetPlayerState(pid))
    {
        case PLAYER_STATE_DRIVER
        {
             new vid = GetPlayerVehicleID(pid); 
             //lower the fuel... 
        }
    }
}

If you want to round stuff, use floatround