Decline in response rates has increased awareness in the research community for the necessity of more detailed nonresponse analyses. This paper presents results of a follow-up study to the cross-sectional household travel survey, “Mobility in Cities – SrV 2018”. This nonresponse survey covered socio-demographic, travel-related, and trip-related information of 3,108 individuals distributed across the 112 municipalities of the main survey. Response-propensity models were developed which examine drop-out mechanisms and participation probabilities. Education was identified as an explanatory variable; however, there are no indications that this played a factor in weighting for improving the representativeness of reporting-day-specific travel patterns.