The cabin of the Mercedes-Benz C-Class is more spacious. On the inside you certainly get a sense of the 'Baby S' tag, perhaps more than the outside, because of a superior material quality and design layout. The sense of luxury that you get is more heightened. The C-Class isn't still the best drivers' car - the BMW 3 Series has still got that covered. But in terms of style, space, luxury and comfort, the new C-Class is compelling and pushes the envelope far.