Shuttles with Maserati Quattroporte

n 2004, Maserati started production of the Pininfarina-designed Quattroporte, with the same dry sump 4.2 L engine as the Coupé, Spyder and the new GranTurismo but improved to 400 PS (294 kW). Due to its greater weight than the Coupé and Spyder, the 0-62 mph (0–100 km/h) time for the Quattroporte is 5.6 seconds and the top speed is 167 mph (269 km/h).[11] The Quattroporte was unveiled to the world at the Frankfurt Motor Show on September 9, 2003 and made its US première at the 2003 Pebble Beach Concours d'Élégance. It is a continuation of the long tradition of Quattroporte luxury saloons in the Maserati line-up. The 47% front / 53% rear weight distribution (with the DuoSelect transmission) allows the large saloon to have very nimble handling. This weight distribution is achieved by setting the engine further back in the chassis behind the front axle to shift the load back towards the cabin, and the adoption of the transaxle layout which sees the gearbox rear-mounted in unit with the differential. The Quattroporte's weight distribution maximizes traction and thrust during acceleration so that the car remains exceptionally stable and well balanced at all times. With the newer automatic transmission, the transmission is adjacent to the engine and weight distribution changes to 49% front / 51% rear.