There is just one powertrain available for the GLB-class—a 2.0-liter turbocharged four-cylinder—but the 4Matic model adds all-wheel drive for a couple thousand dollars extra. From there, we'd tack on ...

HIGHS Comfortable off-road and on, handsome long-roof proportions, spacious and luxurious cabin. LOWS Deserves a better exhaust note, gearbox is occasionally clumsy, working two screens takes practice ...