Gasoline Fuel (Optional) ; EPA Fuel Economy Est - City (MPG), 16 ; EPA Fuel Economy Est - Hwy (MPG), 22 ; Fuel Tank Capacity, Approx (gal.) Displacement (liters/cubic inches). L/ ; Fuel System. Electronic Fuel Injection ; Maximum Horsepower @ RPM. @ ; Maximum Torque @ RPM. @ Check the gas tank size for all trims Jeep Grand Cherokee. Fuel tank capacity in gallons and litres. Or use search to find other model.
Fuel economy has improved as well, with a maximum of 23 mpg when cruising on the highway, 16 in the city and a claimed miles of range on a single ( Compare Side-by-Side ; gallons ; *Based on 45% highway, 55% city driving, 15, annual miles and current fuel prices. Personalize. MSRP and tank size data. Jeep Grand Cherokee Specifications. Expert Rating Wheelbase (in) Length, Overall (in) Fuel Tank Capacity, Approx (gal)