The most obvious updates to the 2017 Maserati Quattroporte are the nosejob and the fresh grill. The flagship four-door also got a boost in power: new top speeds of 192 mph for the GTS model and 177 mph for both the V6-powered S and S Q4. Luxury options abound, like an Ermenegildo Zegna Edition interior & GranSport trim packages.