The Mercedes-Benz GLS (Generation X167) is the flagship SUV of the brand with the star, often described as the "S-Class of SUVs". Launched in 2019 and facelifted in 2023, it offers up to 7 seats in absolute luxury. Based on the MHA (Modular High Architecture) platform, it stands out with its impressive technological arsenal, including the MBUX multimedia system, 48V mild-hybridization (EQ Boost) generalized on gasoline engines, and the optional E-Active Body Control suspension. Although its road performance and comfort are exceptional, its reliability is sometimes marred by the complexity of its onboard electronics and its 48V network.
The Mercedes GLS (X167) is a pinnacle of luxury and space, but it pays the price for its technological sophistication. The gasoline engines (GLS 450 and V8) offer exceptional drivability, but the 48V mild-hybrid system (EQ Boost) had a difficult start (starter-generator failures), particularly on 2019-2021 models. If you opt for a gasoline model, favor a post-2022 GLS 450 or a facelifted model (2023+) benefiting from more reliable electronics. The purchase of such a used vehicle must imperatively be accompanied by an extended warranty (such as Mercedes-Benz Certified) to protect against the exorbitant repair costs related to the air suspension or the 48V network.