Short answer is no. Many universities offer a range of courses in English, especially at the postgraduate level, learning basic German can be very beneficial for daily life and integration. Some programmes may require German language proficiency, but there are also numerous English-taught courses available. 

The cost of living in Germany varies depending on the city. On average, students should budget between €800 to €1,200 per month for accommodation, food, transport, health insurance, telephone/internet, study materials, and leisure activities. Cities like Munich and Frankfurt are more expensive, while smaller cities may be more affordable.

Most public universities in Germany charge low or no tuition fees for international students, especially for undergraduate programmes. Students typically pay a nominal semester fee, which covers administrative costs and provides benefits like public transport discounts. However, private universities may have higher tuition fees, so it's essential to check the specific costs for your chosen institution.