2009 Maserati Quattroporte Sport GT S Details Photo:
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Mike Stevens | May, 20 2009 | 0 Comments

When the 2009 Maserati Quattroporte Sport GT S was unveiled at the Detroit Motor Show earlier this year, Steane described it as the world?s sexiest four-door - the Aston Martin Rapide may wish to lodge a complaint on that call, but regardless, the fast new Mazza saloon is a very good looking unit.

Envisioned, says Maserati, as a ?real driving machine in the guise of a luxury saloon,? the Quattroporte Sport GT S benefits from a number of performance enhancements to make it worthy of the new letters slapped on the end of its name.


On the style front, the Sport GT S gains a more aggressive look courtesy of a new black grille with concave vertical slats aft of the famed Trident logo, which itself has been touched up with red accents to evoke the sporty Maserati look, and the same Trident logo can be seen on the C pillar.

The side and rear of the car takes on what Maserati refers to as a ?shadow line?, featuring black finishing around the doors, body-coloured door handles and black twin oval exhaust pipes. If Batman has a sedan in his cave, this stealthy beast is it.


New 20? Multi Trident silver wheels sit at each corner (?dark chrome? seven-spoke rims can be optioned), in front of red brake calipers and Dual Cast technology brakes.

The interior gets a serving of the company?s new M-design seats with perforated Alcantara and leather upholstery, as well as a titanium-coloured composite material called ?Titantex? as accent trim.


On the technical side of things, Maserati has now released a more detailed run-down of what drives the hi-po Quattroporte, along with a series of images to illustrate the technology. Check it out below.

See below for Maserati?s full release.

Press Release

Powertrain overview

The technical changes to the new Quattroporte Sport GT S compared with the Quattroporte S concern four areas: the engine mapping, the gearshift management software, the suspension set-up and the exhaust system.

  1. V8 4.7 litre engine power is increased to 323kW (440 HP) thanks to the adoption of a sports exhaust system that allows the vehicle?s power to be fully exploited;
  2. specific gear-shifting software with new features designed to increase driving enjoyment;
  3. front and rear suspension featuring single-rate dampers, stiffer springs and lower ride height;
  4. sports exhaust controlled by pneumatic valves for a deep, throaty and captivating sound enhanced by large twin-oval tailpipes.



The GT S engine has been developed to favour maximum power output, whilst its emission levels conform to Euro5 regulations.

maserati-quattroporte-sport-gt-s_technical_02 Above: Quattroporte S vs Quattroporte Sport GT S power/torque curve.

Main technical data:

  • Displacement: V8 4,691 cc
  • Power: 323 kW (440HP) @ 7,000 rpm
  • Torque: 490 Nm @ 4,750 rpm
  • Max engine speed: 7,200 rpm

Exhaust system


In ?Normal? mode, the valves are closed forcing the exhaust gases along a long and tortuous route so that they lose their energy and are emitted with very little noise, thus ensuring on board acoustic comfort.



When the ?Sport? mode is selected, the valves which were initially closed, open up through a pneumatic control and the flow of exhaust gases are channeled down a route that leads directly to the outside, providing enthusiasts with a distinctive sound, giving voice to the deep and throaty V8.



The new Quattroporte Sport GT S is equipped with an automatic six-speed transmission developed with sportiness in mind thanks to the employment of a new and specific gear-shifting strategy: the MC-Auto Shift. Introduced for the first time on this model, it represents the ultimate evolution of the automatic transmission software in terms of sportiness and features specific characteristics which further enhance the ?driving fun?.

  • ?MC AUTO SHIFT? mode:

In Sport Automatic mode the gearshift technology exalts sporty driving. Moreover in order to optimise standing starts, the automatic gearbox offers the MC Start Strategy, which functions with the MSP off. After deactivating the MSP, the driver should press and hold the brake pedal, then start pressing the accelerator and releases the brake pedal only when the optimum revs are reached (usually between 2300-2500 rpm). This fast start strategy reduces the 0 to 100 Km/h (0-62 mph) time from 5.3 seconds to 5.1 seconds.


In manual mode the gear-shift is directly controlled by the driver, allowing the engine to reach its top speed.

In order to allow the driver to find the optimum gear-shifting point, the car features a digital ?rpm indicator? on the dashboard display (same as on GranTurismo S). Moreover, the paddle shifts (Active Shifting), integrated with the steering column, present an ergonomic layout (same as on GranTurismo S) with effective results in on-the-limit driving conditions on winding roads.


When down-shifting, the throttle blip is matched with the SPORT-mode exhaust sound to ensure maximum driving enjoyment.


The Quattroporte Sport GT S features a sporty passive damping suspension system designed to further enhance the Quattroporte S?s already state-of-the-art dynamic balance.

maserati-quattroporte-sport-gt-s_technical_05The new suspension set-up reduces the front and the rear ground clearance. In addition, the spring stiffness has been increased by 30% at the front and 10% at the rear.


These new features ensure:

  • Greater agility when cornering and greater steering wheel responsiveness;
  • more grip when exiting corners;
  • improved cornering stability.
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