KBB.com Brand Image Awards. Delivers 20 Highway MPG and 14 City MPG! Carfax One-Owner Vehicle. This Ford Expedition EL delivers a Regular Unleaded V-8 5.4 L/330 engine powering this Automatic transmission. ENGINE: 5.4L SOHC 3V V8 FFV -inc: Capable of running unleaded or up to 85% ethanol, Fuel economy for ethanol E85: 10 MPG city, 14 MPG highway (STD), Window Grid Antenna, Wheels: 18 Machined-A...