2023 Mercedes-Benz GLB-Class Starting at $40.850 Highs Comfy, upright seating position, plenty of available tech goodies, chic Benz-family styling. Lows Entry-level models are spartan, optional third row is kids-only territory, it’s not a G-class. Verdict The GLB-class’s boxier body makes it more practical than its GLA-class sibling, but the two are still equally compelling mini-Benze