This study aimed to investigate the motivation of a number of Swedish upper secondary students in terms of learning English, as well as their two English teachers’ understanding of this motivation, and how teacher roles and teaching methods might be crucial for students’ motivation to learn English at upper secondary level. The data was collected and analysed both quantitatively and qualitatively, as both a questionnaire and interviews were chosen as data collection methods. In terms of results, a variety of levels and sources of motivation were indicated by both the students and the teachers that participated in the study. Among other things, the teacher’s approach and attitude as well as choice of teaching methods play a crucial role for students’ motivation to learn English. For example, creating a safe classroom climate, showing enthusiasm and a positive outlook as well as working with the students' interests, are all factors that can help teachers in improving student motivation both individually and collectively.