The GLS, or Geländewagen (off-road, in German), is a sub-compact luxury crossover SUV. The letter "L" signifies its link or connection to the alphabet "S", which belongs to the S-class in the Mercedes-Benz range. This variant stands above the GLC and the GLE class of models. 

AMG is the tuning division of Mercedes-Benz and is an abbreviation of the initials of its founders, Hans Werner Aufrecht and Erhard Melcher, and the place where Hans Werner Aufrecht was born, i.e., Großaspach (Grossaspach).

This X166 (technical name) SUV has a 5.5-litre V8 engine and is produced in Pune, India, and Indonesia, Thailand, and the USA.