Only 51,708 Miles! Scores 25 Highway MPG and 18 City MPG! This Jeep Grand Cherokee boasts a Regular Unleaded V-6 3.6 L/220 engine powering this Automatic transmission. TRANSMISSION: 8-SPEED AUTOMATIC (845RE) (STD), QUICK ORDER PACKAGE 23S HIGH ALTITUDE -inc: Engine: 3.6L... via CarSoup