In all 13,362 letters were sent out; 12.000 to normal car buyers and 1362 to electric car buyers. This resulted in an overall response rate of 13.4 % for the first questionnaire (11.8% for normal car buyers and 27.3% for electric car buyers), and of 11.69 % for the second questionnaire (10.41% for normal car buyers and 22.98% for electric car buyers). The response rate for the normal car sample is within the range expected for an online study with long questionnaires (Deutskens et al., 2004); the response rate for electric car buyers is comparatively high