Maserati is to introduce a GT S version of the new Quattroporte sedan which features an extra 10 bhp power amongst detail technical and cosmetic revisions; the new Quattroporte Sport GT S is set to receive its world debut at the 2009 North American International Auto Show in Detroit, the show appearance coming on the occasion of the 70th anniversary of Maserati first Indianapolis 500 win.

The new Maserati Quattroporte Sport GT S claims to sets yet another milestone in terms of sportiness in the high performance luxury sedan segment of the automotive market. Conceived and developed by Maserati as "a real driving machine in the guise of a luxury sedan", the Quattroporte Sport GT S is the ultimate expression of Maserati's sportiness in the Quattroporte range.

This special new version comes hot on the heels of the arrival of the facelifted Quattroporte, including the range-topping Quattroporte which debuted in the showrooms this summer five years after the super luxury four door sedan premiered at the Frankfurt IAA in 2003.

The technical changes to the new Quattroporte Sport GT S in respect to the Quattroporte S concern four areas. First the 4.7 litre V8 engine has been remapped, with power increased from the standard model's 430 bhp to 440 bhp. The gearshift management software on the ZF sourced automatic gearbox has been revised with new features designed to increase driving enjoyment. the front and rear suspension system now features single-rate dampers, stiffer springs and lower ride height while a new sports exhaust system is controlled by pneumatic valves for a deep, throaty and captivating sound.

The sportier and more aggressive look is evident also in virtue of the interior's and exterior's stylistic choices. The Quattroporte GT S has an eye-catching new black grille with concave vertical fins featuring the Trident logo with red accents, typical of the sportier versions of Maserati models; the new headlights now have a metallic titanium finish; the side and rear "shadow line", includes black finishing around the doors, body-coloured door handles and black twin oval exhaust pipes. Inside the Quattroporte GT S new M-design seats feature perforated Alcantara and leather upholstery while the standard trim is in Titantex, a "titanium coloured" composite material.