The 2017 Maserati Quattroporte GranLusso (l) and the Quattroporte GranSport (r)

It’s been nearly four years since Maserati rolled out the complete remake of its big Quattroporte sedan, so it’s time for the requisite, mid-cycle refresh.

Set to roll into showrooms this month, the 2017 Maserati Quattroporte goes through a number of tweaks, including updates to its exterior and interior. There are a number of new safety, mileage and infotainment technologies – such as Emergency Auto Braking, grille shutters and Apple CarPlay. And there are now two new trim levels.

The current-generation Quattroporte has been one of Maserati’s most successful models ever, only outsold by the smaller, more affordable Ghibli. The maker says it has delivered over 24,000 of the larger sedans since its 2013 launch, with buyers in 72 different countries.

(Click Here for a test drive of the all-new Maserati Levante SUV.)

From a styling standpoint, the 2017 update is relatively modest. The exterior, the Italian maker notes in a release, features a new bumper design with a matte block profile, as well as a matte black extractor at the rear. That finish is countered by new, vertical chrome elements designed to give the sedan a “shark nose effect.” There are also matte black side skirts.

The 2017 Maserati Quattroporte GranSport interior.

Under the new grille, the 2017 Maserati Quattroporte gets an electrically adjustable air Shutter to reduce drag by as much as 10% when cooling demands are low.

Inside, there are subtle details which, Maserati says, “were introduced to enhance the purity of the model by underlining only the functional parts.” The most notable revision is the integration of a new capacitive high-resolution 8.4-inch touchscreen.

The updated infotainment system allows for smartphone-style multi-finger touch. Meanwhile, it now can operate both Apple CarPlay and Android Auto systems.

Picking up on a popular industry trend, Maserati will now offer a new Advanced Driver Assistance System package that “includes Adaptive Cruise Control with Stop&Go, Lane Departure Warning, Forward Collision Warning with Advanced Brake Assist and Automated Emergency Braking. An additional new Surround View Camera is available as an option.”

The 2017 update also adds a new air quality system designed to analyze cabin air and, if need be, seal out pollution.

(Luxury SUVs were the rule at the 2016 NY Auto Show. Click Here for the story.)

The GranLusso interior.

Two new trim levels are being introduced for 2017, including the GranLusso and GranSport.

The former puts an emphasis on the Maserati Quattroporte’s luxury side, focusing on the exterior finish and in-cabin comfort. Outside, the GranLusso gets a new front lower fascia and a “delicate” spoiler, as well as side skirts and 20-inch Mercurio rums with black painted brake calipers.

Inside, the sedan picks up the distinctive Ermenegildo Zegna Edition trim, notable for the specially developed silk used on its doors, seats, headliner and sun visor.

The GranSport underscores the other side of the Maserati Quattroporte’s personality, focusing on the car’s racing heritage.

“On the front,” explains Maserati, “the dedicated shape treatment for the center and side air intakes improves the cooling function while showcasing an aggressive front area. The lower fascia is linked to the grille with aerodynamic inspirited splits. The back is characterized by an evident composition between a center fuselage and two side pockets that focus the attention on the exhausts. An aggressive black piano spoiler completes the rear view.”

A look at the GranSport's new 20-inch wheels.

The GranSport also gets 20-inch Titano rims, a glossy black finish on the bumprers, and red brake capipers. There’s also an optional Carbon Pack trim package.

Inside, the 2017 Maserati Quattroporte GranSport features a more sporty steering wheel, either in carbon fiber or full leather, with aluminum shifter paddles. The dashboard is complemented with Piano Black wood trim.

There are no powertrain changes for 2017, the Maserati Quattroporte retaining its 523-horsepower 3.8-liter, Ferrari-derived V-8. Driving the rear wheels, it makes 524 pound-feet of torque and can hit 60 in 4.6 seconds, on the way to a top speed of 193 mph.

There’s also a 404-hp 3.0-liter V-6. The Twin-Turbo package also comes from Ferrari and drive all four wheels in the Quattroporte S Q4 trim. In the S Q4, it will hit 60 in 4.8 seconds, the rear-drive S taking another tenth of a second.

All versions of the 2017 Maserati Quattroporte use an eight-speed ZF automatic.

(What else is new from Maserati for 2017? What’s new for the rest of the industry? Click Here.)