Caught undergoing testing in southern Germany, the 2013 S-Class features a larger grille and CLS-inspired headlights.

Our spy photographers have managed to catch several new pictures of the 2013 Mercedes S-Class.

Caught undergoing testing in southern Germany, the prototype is covered in a blanket of camouflage which hides many of the key styling details. While this is unfortunate, we can get a glimpse of the larger grille and CLS-inspired headlights with LED indicators. Furthermore, the car looks slightly larger than its predecessor and will likely have a design influenced by the F700 concept.

As we have previously reported, the new S-Class may be available exclusively with hybrid engines. Nothing is official, but Mercedes believes this will ensure the model is compliant with rising fuel economy and emission standards. Regardless of whether or not the hybrid-only lineup is approved, the next-generation model will be available as a plug-in hybrid.  It will likely feature the same powertrain as the S 500 Vision concept which should enable it to average 78 mpg (3.0 L/100km).

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