Mercedes-Benz ≫ GLSMercedes-Benz GLS (2016 facelift, X166, third generation) photosby Joshua ThompsonMercedes-Benz has lightly facelifted the X166 GL SUV and renamed it as the GLS, with three models initially available: GLS350d, GLS400 and GLS63 AMG. ◄ PrevNext ►Credit: Mercedes-Benz X166 Mercedes-Benz GLS350d facelift Tags:faceliftglsgls-classmercedes-benzthird generationx166