Although AMG has been selling four-cylinder cars for years, most purists don't see models like the CLA45 and GLA45 as full-fat AMGs because of their puny 2.0-liter engines. Enthusiasts have a problem with the latest C63 and GLC63 since these are also four-bangers now, albeit supplemented by a powerful plug-in hybrid setup. Despite the initial reluctance, Mercedes believes we'll warm up to full-fat AMGs with downsized powertrains.
