“…With respect to new cars and their proportionally related fuel efficiency and CO 2 emissions, many countries have witnessed a seemingly endless upward spiral in consumer preferences for buying bigger, heavier and more powerful cars, which has largely offset any fuel-efficiency gains from technological advances in the past (Cuenot, 2009;Knittel, 2011;Kwon, 2006;Ó Gallachóir et al, 2009;Sprei et al, 2008). Although the upward trend in car size, weight and power has long absorbed the CO 2 emissions reduction potential of new vehicle technologies, recent developments show stagnation and even a decline in these consumer amenities (Kok, 2013;Schipper, 2011;Sprei and Karlsson, 2013). Since 2007 a number of European countries including The Netherlands have implemented targeted tax changes to influence car purchasing trends towards lower CO 2 -emitting vehicles.…”