Second only to the 3 Series in terms of sales popularity, the C-Class takes a different tack than its BMW rival. The BMW is dynamically talented but, for some, uninvitingly austere; the Benz is soft and stately. Problem is, others have Mercedes beat at its own game. From the Infiniti G37 to the Audi A4, cabins both richer and roomier can be had for this sort of money — and a number of competitors pack better fuel economy and resale values, too. The C-Class is competent, but in a field of excellent contenders, continuing its sales popularity will require some work.