The Quattroporte is available in rear-wheel-drive S, all-wheel-drive S Q4 and rear-drive GTS trims, and all models feature generous rear seat room. Under the hood, a 3.0L V6 makes an impressive 424 horsepower in the Quattroporte S, while the Quattroporte GTS benefits from a 523-horsepower V8, which Maserati says will power the car to a 191-mph top speed. Both engines are mated to a ZF 8-speed automatic transmission. Beyond a more spacious cabin and big power, the Quattroporte advances what a luxury sports sedan should be. S and S Q4 models include adaptive LED taillights, plus 19-inch wheels, adaptive suspension, a power trunk lid and power folding mirrors. The interior is trimmed with rich leather upholstery, wood accents, automatic dual-zone climate control, heated, 12-way power adjustable front seats with a 60/40 split-fold rear, a sunroof, a 10-speaker audio system with iPod integration and 8.4-inch touchscreen, navigation and Bluetooth. A rearview camera and parking sensors front and rear are also standard. To handle the extraordinary power in the GTS, 20-inch wheels with bigger brakes are included. The Quattroporte also gets a heated rear seat, wood trim and steering wheel-mounted paddle shifters. The Quattroporte is as customizable as they come, and buyers can option their sedan with options such as folding rear tables, twin rear seats in place of the bench, various wood inserts, front-seat ventilation, in-car Wi-Fi, a rear power outlet and much more. Packages include the Climate Package, which adds 4-zone climate control, leather-wrapped steering wheel and a heated rear seat. The Luxury Package adds power-adjustable pedals and Alcantara headliner. The Sport 20 Package includes 20-inch "Mercurio" wheels, and the Sport 21 Package, meanwhile, adds shifter paddles, 21-inch "Titano" wheels, sport foot pedals and colored calipers.