The Mercedes-Benz AMG CLE 53 is the top-shelf CLE, for now It’s the only finalist powered by gas A Mercedes-Benz AMG CLE 53 costs $73,950 Mercedes has done addition by means of subtraction. The CLE combines the E-Class and C-Class coupes into one midsize vehicle—and it does an admirable job in a shrinking segment. The AMG-badged…