From laboratory to road
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On the way to ‘real-world’ CO2 values? The European passenger car market after 5 years of WLTP
This report investigates the gap between real-world and official or type-approval CO2 emissions of the European passenger car market since introducing a new test procedure, the Worldwide harmonized Light vehicles Test Procedure (WLTP).
On the way to “real-world” CO2 values: The European passenger car market in its first year after introducing the WLTP
Preliminary data show that WLTP type-approval CO2 emissions are on average 21% higher than NEDC levels and indicate significantly more realistic real-world CO2 emissions than the NEDC type-approval test procedure.
From laboratory to road: A 2018 update
This update, based on a statistical analysis of data for more than 1.3 million vehicles from eight European countries, shows the average gap between official fuel consumption figures and actual fuel use for new cars in the EU stabilized at 39 percent.
From laboratory to road: A 2017 update
This update adds one new data source, for a total of 14, covering 16 years, eight countries, and approximately 1.1 million cars. The analysis shows that, in the EU, the gap between official and real-world CO2 emission values continues to grow—from 9% in 2001 to 42% in 2016.
From laboratory to road international: A comparison of official and real-world fuel consumption and CO2 values for passenger cars in Europe, the United States, China, and Japan
Investigates the gap between real-world and official CO2 emission values in the four largest vehicle markets in the world: China, the EU, Japan, and the United States. The analysis shows that the gap has increased in all markets since 2001.
From laboratory to road: A 2016 update
This update adds two new data sources, for a total of 13, covering 15 years, six countries, and approximately 1 million cars. The analysis shows that, in the EU, the gap between official and real-world CO2 emission values continues to grow—from 9% in 2001 to 42% in 2015.
From laboratory to road: A 2015 update
This annual update to the L2R series analyzes eleven data sources covering fourteen years, six countries, and almost 600,000 vehicles. In the EU the gap between official and real-world vehicle CO2 emissions grew to 38 percent in 2014.
From laboratory to road: A 2014 update
Extends an analysis of the gap between official and real-world fuel consumption and CO2 emissions for passenger cars in Europe, which reached 38% in 2013 and continues to grow at an accelerated pace.
From Laboratory to Road
Comparison of official and “real-world” fuel consumption and CO2 emission values for passenger cars in Europe and the United States, which shows that the average discrepancy between them rose from less than 10% in 2001 to 25% in 2011.
