The Mercedes-Benz CLA-Class and Audi A3 attained almost identical levels of popularity in the United States in 2014. True, Mercedes-Benz sold 27,365 CLAs over the last twelve months; Audi sold only 22,250 A3s during that period. That’s 23% more CLA sales than A3 sales. Already a Member? Sign in to your account here and Refresh this page to access your content!