[[File:2020 Mercedes-Benz GLS 450, front 1.20.20.jpg|thumb|X167 GLSKelas-ClassGLS]]
TheModel thirdgenerasi generationketiga modelmemulai debuteddebutnya at thedi [[New York International Auto Show#2019|2019 New York International Auto Show 2019]]. ThePilihan enginemesin optionssaat atpeluncuran the launch areadalah 3.0-litre liter turbo inline six (GLS 450 4MATIC) anddan 4.0-litre liter twin-turbo V8 (GLS 580 4MATIC), bothkeduanya petrolberbahan withbakar EQbensin Boostdengan electricmotor motorslistrik EQ Boost, anddan 2.9-litre liter twin-turbo diesel inline sixenam. indalam twodua differentkeluaran outputsberbeda (GLS 350 d 4MATIC anddan GLS 400 d 4MATIC).<ref>{{cite web|url=https://www.mbusa.com/en/future-vehicles/2020-gls-suv |title=The new 2020 Mercedes-Benz GLS |website=Mercedes-Benz USA }}</ref><ref>{{cite web|url=https://www.mercedes-benz.de/passengercars/mercedes-benz-cars/models/gls/suv-x167/specifications/specification-teaser.module.html |title=Der neue GLS. |website=Mercedes-Benz Deutschland }}</ref> A firstVersi SUV version ofpertama Mercedes-Maybach, model Mercedes-Maybach GLS 600 4MATIC model was releaseddirilis inpada lateakhir 2019.
TheJarak wheelbasesumbu isroda 2.,3 inchesinci longerlebih andpanjang nearlydan anhampir inchsatu wider.inci Itlebih useslebar. theIni samemenggunakan architecturearsitektur asyang thesama latestdengan GLE withterbaru dengan MBUX anddan duallayar ganda 12.,3-inchscreensinci as well asserta E-Active Body Control anddan carkomunikasi mobil-toke-X communication. TheEksterior juga telah didesain exteriorulang hasdengan alsolampu beendepan redesigneddan withlampu sleekerbelakang headlampsyang andlebih taillampsramping.<ref>{{Cite web|url=https://www.caranddriver.com/news/a27165682/2020-mercedes-benz-gls-photos-info/|title=The 2020 Mercedes-Benz GLS Is Even More of an S-Class SUV|work=[[Car and Driver]]|last=Vanderwerp|first=Dave|date=17 April 2019|access-date=17 April 2019}}</ref>
