Mike Stevens | Dec 6, 2010

Leaked promotional images are a constant bane for carmakers, revealing every angle of the brand's next leap forward and robbing the company of its moment in the sun.

This week, Mercedes-Benz has been made the victim of an even worse scenario: a leaked promotional video for its new updated-for-2012 SLK roadster.

A significant overhaul to the current SLK (click to read TMR's review), the new model benefits from an SLS-inspired facelift and a remodeled rear-end.

It also gets a brand-new interior, including new seats, a chrome-rich redesigned dash, a new sports steering wheel and new door panels.

The leaked video reveals a number of new and familiar features, along with Mercedes' new Magic Sky Control panoramic roof - an option revealed in detail early last month.

The new footage also follows earlier spy photos that revealed the new SLK testing alongside its predecessor, the current (soon to be superseded) generation.

Power for the new SLK is expected to come from the company's 2.2-litre BlueEfficiency four-cylinder twin-turbo diesel, developing 152kW and 500Nm of torque.

Petrol engines are also expected, with talk of a twin-turbo version of the company's new 225kW 3.5 litre V6 on the cards for a AMG version of the new SLK, developing around 260kW.

See the leaked promotional video below, along with (blurry) captured images in the gallery.

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