The following is copied directly out of my 2016 Jeep Grand Cherokee Overland Owner's Manual: FUEL REQUIREMENTS (STARTING AND OPERATING p.575) 3.6L Engine Do not use E-85 flex fuel or ethanol blends greater than 15% in this engine. Cost to Fill the Tank. $72. Tank Size. 20.8 gallons. *Based on 45% highway, 55% city driving, 15,000 annual miles and current fuel prices. Personalize. MSRP and tank size data provided by Edmunds.com, Inc. Range on a tank and refueling costs assume 100% of fuel in tank will be used before refueling. 2005 Jeep Grand Cherokee 4WD. Real MPG: Jeep Grand Cherokee (2005 - 2011) 5.7 V8 HEMI Submit your Real MPG Engine: 5.7 V8 HEMI 3.0 CRD 6.1 SRT Type of driving: Mostly city Mixed Mostly motorway Annual mileage: Postcode: Real MPG: Submit 2007 Jeep Grand Cherokee Limited 3.0L V6 DIESEL Automatic 5 Speed Sport Utility Added Jul 2018 • 129 Fuel-ups. Get an accurate view of your vehicles fuel economy; 2020 Jeep Grand Cherokee Limited 3.6L V6 FLEX Automatic 8 Speed Added Nov 2020 • 100 Fuel-ups. Property of duheb . A simple & effecive way to track fuel consumption In search of better fuel economy it deactivates four of the eight cylinders when loads are low, such as freeway cruising. Jeep Grand Cherokee Limited 5.7 Hemi V8. How much: $71,990 plus What is the fuel economy, Jeep Grand Cherokee IV (WK2) 5.7 V8 (364 Hp) 4x4 Automatic? 15.7 l/100 km 14.98 US mpg 17.99 UK mpg 6.37 km/l: How much power, Jeep Grand Cherokee SUV 2011 5.7 V8 (364 Hp) 4x4 Automatic? 364 Hp, 529 Nm 390.17 lb.-ft. What is the engine size, Jeep Grand Cherokee SUV 2011 5.7 V8 (364 Hp) 4x4 Automatic? 5.7 l 5654 cm 3 Fuel Economy of 2005 Jeep Vehicles. EPA MPG Owner MPG Estimates 2005 Jeep 2005 Jeep Grand Cherokee 2WD 8 cyl, 5.7 L, Automatic 5-spd Regular Gasoline: XnD7y.