The GLA 35 and GLB 45 may ride on the same platform, but their proportions vary wildly. The GLA’s wheelbase measures only 107.4 inches compared to 111.4 inches on the GLB. Overall length is a similar story, with the GLA sitting 173.6 inches long compared to the GLB at 183.1 inches. The GLB is slightly wider than the GLA, but the most telling measurement is height, where the GLB stands 65.4 inches tall while the GLA is shorter in stature at 63.6 inches.
Looking at these two from their side profiles, it’s difficult to tell that they share underpinnings. Mercedes styled the GLB to look boxy, almost like a baby G-Wagen or GLS. The GLA is more curvaceous, like a raised coupe or hatchback. Basing the choice purely on styling, we personally feel the GLB is more attractive.