Based on the C 63 AMG, the new edition is called the DR 520 - a name chosen because each car's 520hp output will be 'Dynamometer Rated', we were reliably informed at Goodwood yesterday when the new edition got its first public airing.
Just 20 examples of the DR 520 will be built, and sold exclusively through the Specialist Products division at M-B World in Surrey.
The AMG Performance Pack Plus is fitted to the DR 520 as standard and features AMG's high-performance braking system with red callipers, while the Brabus engine upgrades include forged pistons, newly-developed connecting rods and a revised crankshaft. There's also an AMG Carbon Fibre rear spoiler for the Saloon version.
Inside, the sports seats are upholstered in leather and exclusive Alcantara finished with red or white contrast stitching, as is the dashboard and upper door panels. The multi-function AMG Performance steering wheel is clad in Nappa leather and Alcantara.
The saloon version costs £62,430 and the Estate £63,880, and we've been tipped off to expect similar projects to emerge from M-B World in future - with perhaps a 'DR' E-Class next out of the blocks some time next year.