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Fiscal Policy and CO2 Emissions of New Passenger Cars in the EU

Journal article
Authors Reyer Gerlagh
Inge van den Bijgaart
Thomas Michielsen
Hans Nijland
Published in Environmental and Resource Economics
Volume 69
Issue 1
Pages 103-134
ISSN 0924-6460
Publication year 2018
Published at Department of Economics
Pages 103-134
Language en
Keywords CO2 emissions, Fuel taxes, Vehicle registration taxes
Subject categories Economics


To what extent have national fiscal policies contributed to the decarbonisation of newly sold passenger cars? We construct a simple model that generates predictions regarding the effect of fiscal policies on average CO2 emissions of new cars, and then test the model empirically. Our empirical strategy combines a diverse series of data. First, we use a large database of vehicle-specific taxes in 15 EU countries over 2001–2010 to construct a measure for the vehicle registration and annual road tax levels, and separately, for the CO2-sensitivity of these taxes. We find that for many countries the fiscal policies have become more sensitive to CO2 emissions of new cars. We then use these constructed measures to estimate the effect of fiscal policies on the CO2 emissions of the new car fleet. The increased CO2-sensitivity of registration taxes have reduced the CO2 emission intensity of the average new car by 1.3 %, partly through an induced increase of the share of diesel-fuelled cars by 6.5 percentage points. Higher fuel taxes lead to the purchase of more fuel efficient cars, but higher diesel fuel taxes also decrease the share of (more fuel efficient) diesel cars; higher annual road taxes have no or an adverse effect.

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