- October 5, 2014
- Reaction score
- City, State
- Northern Central CT
- Year, Model & Trim Level
- 2011 Ford Explorer
I guess the manufacturers feel they are covered when they state, "Actual mileage may vary."
Their mileage figures for the Ecoboost were also reached using 93 octane gasoline.
Octane is a measure of how resistant gasoline is to detonation, and higher numbers are used in higher compression motors to prevent pre-detonation ("spark knock") due to the higher heat created from the high compression. It has nothing to do with MPG.