The Fiends over at Avus must have a secret army of Umpa Lumpas. It’s the only way the company could churn out the Matte Black Audi A5 TDI and this bad ass sedan in such a short period of time. The German tuner has set its wrenches on Mercedes-Benz’s vicious C63 AMG and squeezed 585 bleeding horsepower out of the rig. That’s over 100 extra horsepower over what the stock, supercharged 6.3-liter V8 produces. There are a few upgrades to help the car cope with all that gusto, including massive stoppers and more aggressive coilovers as well as a few visual tweaks. Personally, I dig on the blacked-out grille. [Source: Carscoop]