The GLA is redesigned for 2021 and is the fourth model on Mercedes front-drive architecture that includes the A-Class and CLA sedans, and the GLB SUV. It is markedly better than the cramped, stiff-riding original. Power comes from the same 221-hp turbocharged four-cylinder engine as the GLB, mated to an eight-speed dual clutch automatic. It’s a quick car despite some initial hesitation from a rolling stop. Front-wheel drive is standard; all-wheel drive is optional. Fuel economy is commendable. The solid, substantial GLA feels taut and agile on the road, but the ride skews firm. The seats are comfortable and supportive and fit and finish is impressive. We found the elaborate infotainment system too distracting. Forward collision warning, automatic emergency braking, and blind spot warning are standard. Adaptive cruise control and lane change assistance are optional.