The new Mercedes-Benz C-Class lands in South Africa with sleek exterior styling and an interior that’s both elegant and packed with tech. It’s arguably a case of “Honey, I shrunk the S-Class”. However, it faces stiff competition in the form of its German Big Three rivals, the BMW 3 Series and Audi A4. Will the W206-generation C once again claim its crown as the, ahem, class leader in the premium midsize-sedan segment? We take the C220d derivative for a drive to find out…