This work aimed to examine young consumers’ level of knowledge on sustainability and their preferences on selected last mile delivery features. Generation Z was chosen because they are one of the largest groups of online buyers. Since they live in an era where sustainability is so emphasized and widespread, we assumed they might exhibit unique flexibility in modifying their habits in favor of the environment. The study found that despite seeming familiarity with sustainable development, the vast majority of respondents do not know exactly what it is. Based on the results of the study, it can be concluded that it is necessary to increase the environmental awareness of Generation Z and develop a system for reporting the real impact of consumer choices on the environment.