Fig. 1-5 Passenger cars: Increasing gap between type-approval and real-world CO2 emissions
Data source: Tietge, U., Zacharof, N., Mock, P., Franco, V., German, J., Bandivadekar, A., Ligterink, N., Lambrecht, U. (2015). From laboratory to road: A 2015 update of official and “real-world” fuel consumption and CO2 values for passenger cars in Europe. International Council on Clean Transportation (ICCT).
Please click here to download the 2016 update from the report. A downloadable .xls file with data summary statistics can also be found by following the link.