* Year and Model of the Ranger: Fuel economy varies significantly between model years and engine options (e.g., a 2.3L EcoBoost will get different mileage than a 2.7L EcoBoost).
* Engine and Transmission: The specific engine and transmission combination greatly impacts fuel efficiency.
* Driving Habits: Aggressive driving, frequent acceleration and braking, and excessive idling will all reduce MPG.
* Terrain: Off-road driving significantly lowers fuel economy compared to highway driving.
* Tire Inflation: Properly inflated tires improve fuel efficiency. 33-inch tires, even if properly inflated, will likely increase rolling resistance compared to stock-size tires, lowering MPG.
* Modifications: Other modifications, such as a lift kit or heavier accessories, can also impact fuel economy.
While 33-inch tires will likely *reduce* fuel economy compared to the factory tire size, the *exact* reduction is difficult to quantify without knowing the specific vehicle and driving conditions. You'll see a decrease of several MPG, possibly 2-4 mpg or even more, depending on the factors above.
To get a better estimate, you could:
* Check the EPA fuel economy ratings for the specific year and model of your Ranger: This will give you a baseline for the factory tire size.
* Search online forums: Owners of similar Rangers with 33-inch tires often discuss their real-world fuel economy. However, keep in mind that these are anecdotal reports.
In short, expect lower MPG than the factory rating, but the exact number is highly variable.
