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What's you're real world MPG (USA)

On Wednesday I filled up in Eastern NY near the VT border and the station only had ethanol-free high octane. went 341 miles and refilled with 21.2 gallons (~16 mpg) Only had 2 bars left on the gas gauge and didn’t want to push it like @Jean Mercier 😅

Driving was a mix of state routes and highway. It is close to the best mileage I’ve gotten in my 15 months of ownership. I do not use the vehicles calculation of mileage as it is always at least 2-3 mpg higher than my calculations.
 
Oh, couple things I forgot to add, the high hump in my prior screenshot was on a 2,000 mile road trip from PA to FL for a week, so mostly highway. The rest of the time is mixed highway/rural and carrying my RTT and awning. I had the tent off for the roadtrip.

IMG_2377.jpeg
 
I belong to team "I have no clue and don't want to know". I'm always shocked, amazed and confused by people to track fuel mileage so carefully. It's crazy how different humans can be.
 
I belong to team "I have no clue and don't want to know". I'm always shocked, amazed and confused by people to track fuel mileage so carefully. It's crazy how different humans can be.
I only did it because I went from a 36 gallon tank to 23. I figured the fuel economy would be similar, but was interested in seeing how much range I really had.
 
Now that we've had some ownership time under the belt. What's your real world mpg in the USA calculated at the pump? Not the dash with the imperial gallons. I'm about to slap a new brush guard on, and just put new Nokian 34" tires on, a bit scared to look at the numbers.
Modifying a vehicle, particularly with additions like brush guards and larger tires, inevitably raises concerns about fuel economy. While the dashboard display offers a preliminary indication, calculating miles per gallon (MPG) based on actual pump measurements provides a more accurate reflection of real-world performance. Such calculations are crucial for understanding the true cost of vehicle ownership, especially after incorporating modifications that alter aerodynamics and increase rolling resistance.

The transition to larger, 34-inch tires, known for their off-road capabilities, can significantly impact MPG due to their increased weight and altered gear ratio. Similarly, the addition of a brush guard, designed to protect the vehicle's front, introduces a larger frontal area, increasing drag and necessitating more energy to maintain speed.

Therefore, meticulously tracking fuel consumption at the pump, using US gallons, becomes essential after implementing such modifications. This practice allows for a realistic assessment of the trade-off between added functionality and diminished fuel efficiency, ultimately informing driving habits and future modification decisions. Ignoring this crucial data point risks overlooking the long-term financial implications of altering a vehicle's factory configuration.
 
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