Mercedes-Benz just keeps dropping ... the upcoming GLA-Class compact crossover, now the 2015 C-Class, the German brand's bread-and-butter luxury sedan, is ready to unleash its secrets, as well.

Mercedes has finally allowed the C-Class to be the midsize luxury/sport sedan it has always strived to be. In the more powerful C400, everything is largely the same, there's just a greater rush of ...