Curb weight

Under the empty weight is the mass of a weighted according to specific criteria object. The empty weight and the empty weight is especially an important feature of a motor vehicle. The term partial weight is not physically accurate, since not the weight force is meant but the mass.


For the empty weight of an airplane, there are a variety of possible definitions, see aircraft weight.

To DIN 70020

To determine the empty weight of a vehicle There are different standards. The empty weight of a road vehicle (eg a passenger car ) is made according to the DIN standard DIN 70020 part 2 from the mass of the vehicle in at least 90 % filled tank and according to vehicle yet the scheduled 75 kg driver weight together; the standard edition of June 1972 was for motor vehicles and their trailers, with the exception of motorcycles and some special vehicles. ( The standard edition of February 1957, however, also included provisions for motorcycles and scooters. ) She was largely aligned with the international ISO Recommendation R 1176. Specifically, this standard edition distinguishes the " weight of the dry chassis ", the "weight of the operational chassis ", the " weight of the dry chassis with cab ," the "weight of the operational chassis with cab, " which means " empty weight of the dry vehicle " and the "unladen weight of the operational vehicle ". For verification, a tolerance of ± 5 % was considered acceptable. This DIN standard was withdrawn in January 2006 in favor of the international standard ISO 1176, second edition of July 15, 1990.

For the registration of vehicles for road transport was in Germany in the vehicle to 2005 notes issued also entered the empty weight of the vehicle ( in section 14 ) and vehicle letters to the Vehicle Registration Regulation. In force from 2005 registration certificate (Part I), the term in the G field is used as a "mass of the vehicle in service in kg Unladen mass'. The curb weight of the vehicle plus this case comprises a full fuel tank, driver weight (75 kg), hand tools, spare wheel, first aid kit and warning triangle. For vehicles that were first registered from July 2003, only 90 percent of the fuel tank capacity is taken into account for the fuel fill.

Note: Until May 1972 contained DIN 70020 - without dividing into several standards - " General concepts, formulation and explanation " for the automotive industry. In the issue of August 1954 details on the determination of a weight control are listed, for the tax of some vehicle types were relevant at the time. The first edition of this standard comes from August 1940.

Directive EC 92/21

Directive 92/21/EEC of the Council of 31 March 1992 and after the adjustment by Directive 95/48/EC of the Commission of 20 September 1995 on the masses and dimensions of motor vehicles of category M1 ( four-wheel vehicles with a top speed of more 25 km / h) is defined as an empty mass is the mass of the vehicle in running order (including coolant, oils, fuel, spare wheel, tools and driver ). For the driver a uniform mass of 75 kg (68 kg 7 kg of luggage ) is assumed.

Directive 2007/46

In Annex I, point 2.6. is the unladen mass than the mass of the vehicle with bodywork in running order, or mass of the chassis, including liquids, tools, spare wheel (if available) and driver and, for buses and coaches, a crew member of the crew when the vehicle has a seating for the driving staff have defined. The mass of the driver is assessed at 75 kg; the fuel tank is filled to 90 % and the other liquid containing systems (except systems for used water ) to 100 % of the manufacturer's specified capacity are filled.

Provision in Switzerland

The Swiss ordinance defines curb weight as " the weight of the running order, the unladen vehicle with coolant and lubricant, fuel (at least 90 % of the stated by the manufacturer or the manufacturer of fuel capacity ) and the possibly existing additional equipment such as spare tire, trailer hitch, tool, wheel chock fire extinguisher and the leader or the leader, his or their weight is assumed to be 75 kg. "

Security -Military Definition

The Organization for Security and Cooperation in Europe (OSCE ) defines the term " unladen weight" in the Treaty on Conventional Armed Forces in Europe ( CFE) of November 1990, in Article II as follows: Empty weight means the weight of a vehicle without the weight of ammunition fuel, oil and lubricants, removable reactive armor, spare parts, tools and accessories, removable snorkel gear, crew and their personal equipment.