An NTUA Diploma Thesis titled “Investigation of the impact of the COVID-19 pandemic on mobility in Greece using time series analysis” was recently presented by Eleni Blatsouka.  Data on mobility and restrictive measures were collected from online databases and ARIMA time series models were developed for Greece and Athens with dependent variables: driving or walking and with exogenous factor one of the restrictive measures. It was demonstrated that the closing of educational institutions and lockdown are the most important exogenous factors for describing mobility, while the curfew and the mandatory use of mask in all public areas are not significant factors. In addition, seasonal models appear to produce better forecasts than the non-seasonal ones.