2009 Maserati Quattroporte Sport GT S front view2009 Maserati Quattroporte Sport GT S side view2009 Maserati Quattroporte Sport GT S behind view2009 Maserati Quattroporte Sport GT S interiorBase price $138,000 (est) Vehicle layout Front-engine, RWD, 5-pass, 4-door sedan Engine 4.7L/433-hp/361-lb-ft DOHC 32-valve V-8 Transmission 6-speed automatic Curb weight 4400 lb (mfr) Wheelbase 120.6 in Length x width x height 200.7 x 74.6 x 56.6 in 0-60 mph 5.1 sec (mfr est) EPA city/hwy fuel econ 11/18 mpg CO2 emissions 1.46 lb/mile...