KBB.com 10 Most Awarded Brands. Delivers 25 Highway MPG and 18 City MPG! This Jeep Grand Cherokee delivers a Regular Unleaded V-6 3.6 L/220 engine powering this Automatic transmission. TRANSMISSION: 8-SPEED AUTOMATIC (850RE) (STD), RHINO CLEARCOAT, QUICK ORDER PACKAGE 2BZ ALTITUDE -inc: Engine: 3.6L V6 24V VVT UPG I w/ESS, Transmission: 8-Speed Automatic (850RE), Body Color Fascia, Front Accent/Body Color Fascia, Rear View Auto Dim Mirror, Body Color Shark Fin Antenna, Rear Accent/Body Color Fascia, Power 8-Way Driver/Manual Passenger Seat, Power 4-Way Driver Lumbar Adjust, Dark Headlamp Bezel Finish, Body Color Claddings, Security & Convenience Group, Remote Start System, 115V Auxiliary Power Outlet, Universal Garage Door Opener, Heated Front Seats, Heated Steering Wheel, Power Liftgate, Security Alarm, Delete Laredo Badge, Altitude Grille, Altitude IV Package, SiriusXM Satellite Radio (subscription required), Rear Fascia Black Mic Step Pad, Single Exhaust w/Bright Tip, Dark Day Light Opening Moldings, Gloss