The most accurate Honda Accord MPG estimates based on real world results of . million miles driven in , Honda Accords.Fuel economy of the Honda Accord. to present Buyer’s Guide to Fuel Efficient Cars and Trucks. Estimates of gas mileage, greenhouse gas emissions, safety ratings, and air pollution ratings for new and used cars and trucks..Honda Accord Hybrid fuel economy revealed by EPA. It’s a bit worse than the old model, but still makes the mid size family sedan the most fuel efficient Honda besides the Clarity PHEV..Search by Model. Search by make for fuel efficient new and used cars and trucks.