The best year of the Ford Mustang for fuel efficiency was the 2019 EcoBoost with an automatic transmission and regular gasoline. Though the score looks worse than the 1976 Mustang, once scores are adjusted to account for the change in EPA testing, it becomes clear who the true winner is. At 22 mpg city and 31 mpg highway, it’s curiously sippy
2015 Ford Fusion SE 2.5L. January 3, 2024. Fords and many non-Ford vehicles up to 10 years old with less than 150,000 miles. Basic warranty terms 2014-2016 Ford Fiesta and Fusion, Lincoln
2011 Ford Fiesta. EPA MPG Owner MPG Estimates 2011 Ford Fiesta 4 cyl, 1.6 L 3.1 gals/ 100 miles . 2011 Ford Fiesta SFE 4 cyl, 1.6 L, Automatic (AM6)
It took about 1000-1500 miles in the ST for the MPG to go up. It stays pretty consistant until about 9000 miles, and then it starts to drop off. As it gets close to oil change time, the MPG begins to go down quickly. My 2011 does the same thing, so I start doing oil changes around 8000 miles or less. I run 93 only in the ST and 87 in my 2011.