Engström was the only Swedish member of the European Parliament who voted against Mary Honeyball's report "Sexual exploitation and prostitution and its impact on gender equality", which recommends EU member states to adopt the "Swedish Model" that criminalises the purchase of sexual services.
Engström var den enda svenska ledamoten i Europaparlamentet som röstade emot Mary Honeyballs rapport "Sexual exploitation and prostitution and its impact on gender equality", vilken rekommenderade EU-länderna att anta den "svenska sexköpslagen".