The gross weight of a vehicle (GVW) is the weight of the empty auto plus the weight of the maximum payload that the auto was designed come carry. In cars and tiny light trucks, the difference between the empty weight of the vehicle and also the GVW is not significantly different (1,000 come 1,500 lbs). The biggest trucks and also tractor-trailers, however, have a payload volume share of 200%, which method they can carry 200% of their empty weight. The medium-sized trucks (truck class 3-6) have actually payload volume shares in between 50% and also 100%.

Payload volume Share by load Class

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supporting InformationGross auto Weight vs.

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Empty weight of Vehicles
Vehicle DescriptionTruck ClassGross automobile Weight selection (Pounds)Empty automobile Weight range (Pounds)Maximum Payload volume (Pounds)Payload volume Share (Percent of empty Weight)
Cars 3,200-6,0002,400-5,0001,00020%
Minivans, tiny SUVs, tiny Pick-Ups14,000-2,4003,200-4,5001,50033%
Large SUVs, traditional Pick-Ups2a6,001-8,5004,500-6,0002,50040%
Large SUVs, standard Pick-Ups2b8,501-10,0005,000-6,3003,70060%
Utility Van, Multi- Purpose, Mini-Bus, step Van310,001-14,0007,650-8,7505,25060%
City Delivery, parcel Delivery, big Walk-in, Bucket, Landscaping414,001-16,0007,650-8,7507,25080%
City Delivery, thoreau Delivery, large Walk-in, Bucket516,001-19,5009,500-10,0008,70080%
City Delivery, institution Bus, huge Walk-in, Bucket619,501-26,00011,500-14,50011,50080%
City Bus, Furniture, Refrigerated, Refuse, Fuel Tanker, Dump, Tow, Concrete, Fire Engine, Tractor-Trailer726,001-33,00011,500-14,50018,500125%
Refuse, Concrete, Furniture, City Bus, Tow, Fire Engine (straight trucks)8a33,001-80,00020,000-26,00054,000200%
Tractor-Trailer: Van, Refrigerated, bulk Tanker, flat Bed (combination trucks)8b33,001-80,00020,000-26,00054,000200%

Source: national Academy the Sciences, Technologies and also Approaches come Reducing the Fuel intake of Medium and also Heavy-Duty Vehicles, prepublication copy, march 2010, pp. 2-2 and also 5-42.