One wildcard remains the diesel version. When the GLS-Class debuted, there was the GLS350d, which had an available 3.0-liter diesel V6 that produced 255 hp and 455 lb-ft of torque. But the new, stricter EPA testing guidelines for diesel engines put this model on hold. Recently, Mercedes-Benz announced it is scrapping plans to re-release 2017 diesel models, but it will revisit the testing process in 2018. Stay tuned for details on this.
Neither the IIHS nor the NHTSA has tested the GLS-Class for safety, but we expect nothing short of incredible ratings from Mercedes. Like the 2017 model, we expect the 2018 GLS-Class to include crosswind stabilization, trailer stability assist, automatic emergency braking, and a rearview camera all as standard features. We also expect the available options to continue to include blind-spot monitoring, lane-keep assist, an upgraded collision-mitigation system, and more.
Expect a full review closer to launch.