Second Hand Effect

It’s about saving. Not just saving money. The environmental benefit of this global phenomenon is the subject of a study entitled Second Hand Effect conducted by the Swedish Environmental Research Institute (IVL).

The study of environmental benefits of reused objects in 5 countries

The study used data from the 2015 buying and selling activities of five of the Schibsted Media Group’s major marketplaces: Subito (Italy), Vibbo (Spain), Leboncoin (France), Blocket (Sweden) and Finn (Norway). According to researchers, the users who bought second-hand objects – from furnishings to cars – contributed to save 12.5 million tonnes of CO2 in one year, because they didn’t buy new goods and didn’t take the old ones to the dump.

This amount of greenhouse gas is the equivalent of flying an Airbus 380 around the globe 1,100 times.

Italians have contributed to this result on the platform saving 3.4 million tonnes of CO2, the equivalent of the emissions saved in 32 months of traffic block in Milan or 10 months in Rome, the annual emissions of 373,626 Italians, 3.6 million flights from Milan to New York, the production of 5.2 billion tonnes of pasta.

How the environmental saving of the buying and selling of used objects was calculated

The largest amount of saved greenhouse gas emissions was that resulting from the buying and selling of second-hand vehicles (10 million tonnes of CO2 in the 5 countries).

Following are the goods of the home and people (2.1 million tonnes), electornics (650,000 tonnes) and sports and hobbies categories (170,000 tonnes).

Researchers at the IVL analysed random sample tests on published ads in the above mentioned websites. For every category of objects the products’ average material partition was calculated: for example, an average product in the “sofas and chairs” category consists of 30% wood, 11% steel, 18% polypropylene, 20% polyurethane, 10% polyester, 7% cotton, 3% leather and, 1% wool.

What’s the amount of CO2 generated by a smartphone

Researchers then calculated the environmental impact of the raw material extraction and production processes and of waste management.

For example, a new smartphone can generate about 75 Kg of CO2:

  • Raw material extraction: 7 kg
  • Smart phone production: 45 kg
  • Distribution in shops: 7 kg
  • Usage (battery recharge): 13 kg
  • Disposal: 1 kg


Producing and disposing of vehicles, smartphones, furnishings and everyday things has a cost in terms of raw materials and energy. That’s why buying and selling second-hand products can be a smart and sustainable alternative.


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