REVIEW: 2015 Mercedes-Benz C-class: A Touch of (S-)Class. “Mercedes-Benz’s current new-product onslaught, which saw the introduction of both the critically important CLA-class compact sedan and the S-class flagship this year alone, isn’t over. Joining the party is the 2015 C-class sedan, which is making its debut at the 2014 Detroit auto show. It’s also quite possibly is the brand’s most important model to hit the ground for the next couple of years. That’s because it’s the automaker’s top seller here in the States, and faces new pressures to set itself apart from the smaller and youthful CLA-class while also continuing its age-old battle with the BMW 3-series and Audi A4. It also must fend off the excellent Lexus IS and Cadillac ATS.”