Mercedes-Benz M-Class by Navigator84 - CC-BY-SA-4.0 The Mercedes-Benz M-Class, also known as the GLE-Class since 2015, is a luxury midsize SUV that has been a prominent player in the automotive market for several years. Over the years, it went through multiple generations, each refining and improving upon its predecessor’s features. The M-Class/GLE-Class sits comfortably in the midsize luxury SUV segment, catering to consumers who want a perfect balance of luxury, performance, and practicality.