1355 Autocar’s digital editor Mark Tisshaw reports that Mercedes-Benz will launch a new C-class Coupé at the Frankfurt motor show in September, complete with a C63 AMG version that will be a "breakthrough" for the brand according to AMG boss Tobias Moers, although he didn’t go into greater detail. The new C- class Coupe will be an even sleeker design than the S-class Coupe, says design chief Gorden Wagener, which will be "even better to drive than it looks". Mercedes has so far launched saloon and estate versions of the C-class, but the range will soon expand with coupe and convertible variants.