Brabus has released its tuning package for the 2012 Mercedes-Benz CLS range ahead of its official debut at the Geneva Motor Show. As with all things Brabus, the package for the CLS leaves no stone unturned, from an aero and appearance package to the suspension and, finally, the engine.

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Outside, the car gets a revised front bumper with bigger air intakes, new LED daytime running lights and a front splitter. There’s also a set of gilled fenders sporting the Brabus logo and side skirts that give the car the appearance of an even lower stance and helpful entry lights so you don’t bash a shin at night.

Keeping things stuck to the ground is a Bilstein suspension supporting your choice of six styles of Brabus rollers, ranging from 8.5x17s to monster 10.5×20-inch trash-can lids. In a bid for the eco vote, Brabus has focused its tuning efforts on the Mercedes-Benz BlueEfficiency diesel engines. The CLS 250 CDI BlueEfficiency gets a 31-horsepower bump and an astonishing 413 pound feet of torque.

On the higher-spec CLS 350 CDI, the engine mods are dual-mode. In eco mode, the car gets pushed to 509 lb-ft from 457, while horsepower stays the same. Hit the sport mode button, and you’re looking at climbing to 309 hp from 261. That translates into a 5.9-second 0-60 sprint and the inevitable 155 mile per hour top speed.