3.7L V6 DOHC 24V, 7-Speed Automatic, AWD, Black Obsidian. 2017 INFINITI QX50 AWD 7-Speed Automatic Black Obsidian 3.7L V6 DOHC 24V Certified. Certification Program Details: 139 point inspection 3 month 4,000 mile limited warranty Price includes $599 Dealer Handling Fee. Sales Tax, Title, License, Registration, and Emission Testing are additional to the advertised price. See your Groove Sales Team for details.