Lexus GS 450h 2008 Owner's Manual page 214

2-5. Driving information
Example on your vehicle
When 2 people with the combined weight of 366 lb. (166 kg) are riding
in your vehicle, which has a total load capacity of 815 lb. (370 kg), the
available amount of cargo and luggage load capacity will be as follows:
815 lb. — 366 lb. = 449 lb. (370 kg —166 kg = 204 kg)
In this condition, if 3 more passengers with the combined weight of 388 lb.
(176 kg) get on, the available cargo and luggage load will be reduced as fol-
lows:
449 lb. — 388 lb. = 61 lb. (204 kg — 176 kg = 28 kg)
As shown in the above example, if the number of occupants increases,
the cargo and luggage load equaling the combined weight of the occu-
pants who got on later, by an amount. In other words, if an increase in the
number of occupants causes an excess of the total load capacity (com-
bined weight of occupants plus cargo and luggage load), you must
reduce the cargo and luggage on your vehicle.
212
Cargo capacity
Total load capacity