Milage on my trip today. 2.0 liter ecoboost.

[BruceK]

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[dalola]

The warmer temps make an immediate impact! I reset mine on a trip back from the camp last week, when temps were in the 60's, and I also was up near 32. FE has been around 28 for most of the winter.

Can't wait to see how it does in the heat of summer, with summer gas.

 

[Mightybeast]

Not bad

 

[Old Man]

The dash reading for mileage is an estimate and Ford, like all other manufacturers, sets it a couple of mpg higher than actual to make customers feel better. If you want even greater mpg displayed you can go into the ET section of the programming and modify the AFE setting to make it higher or lower it closer to actual.

 

[Lynyrd Skynyrd]

The dash reading for mileage is an estimate and Ford, like all other manufacturers, sets it a couple of mpg higher than actual to make customers feel better. If you want even greater mpg displayed you can go into the ET section of the programming and modify the AFE setting to make it higher or lower it closer to actual.

My ford dash meter is within a tenth or 2 on all my fords (6) since 2016. Ford however undersizes the tires by having the manufacturer skew the numbers and typically are up to 1/2” smaller diameter( gives them better epa numbers to maintain the cafe rating) Two fixes,
1. Forscan to adjust the Speedo spot on
2. I like the look and buy bigger tires. On the maverick I bought 235s (1/2”) larger diameter made my speedometer spot on and also the estimated mpg.
I use forscan when I run 35” rubber on the 150s.

 

[fossil]

The dash reading for mileage is an estimate and Ford, like all other manufacturers, sets it a couple of mpg higher than actual to make customers feel better. If you want even greater mpg displayed you can go into the ET section of the programming and modify the AFE setting to make it higher or lower it closer to actual.

Never had a Ford that was off more than 1 mpg, my Raptor is spot on. People who constantly reset their mpg might run into more errors.

 

[Old Man]

Torquenews testing showed:
"We’ve compared the average MPG displays in our test vehicles to the actual miles traveled per gallons consumed for years. Over hundreds of vehicles tested, we have only seen the display be accurate a handful of times. Most of the time, the MPG display you see in your dash display is telling you your mileage is about 10 to 15% better than it actually is."

From Edmunds:
"As gas prices rise, drivers are paying closer attention to the fuel economy gauges that are found in most late-model cars as part of the trip computer. The only problem is that the gauges are inaccurate. In fact, Edmunds testing reveals that one such gauge claimed fuel economy 19 percent higher than the actual result.

Across two tests in seven different vehicles, the gauges were 5.5 percent inaccurate on average, according to data gathered by the editors at Edmunds.com."
Car and Driver:
"During a 1289-mile round trip from Ann Arbor to New York, C/D’s long-term Acura ILX averaged 29.5 mpg. But its trip computer claimed 31.4—optimistic by more than 6 percent. We also took the long-term Kia Sportage to Washington, D.C., and back. Over 1064 miles, the Sportage achieved 24.6 mpg according to pump and odometer readings. However, its trip computer padded that figure by 1.1 mpg to 25.7—a 4.5-percent inflation. Every fill-up was slightly optimistic."

A 2021 AAA study concluded:
Error was from 2.3%, however, individual vehicles varied greatly.

 

[fossil]

Car and Driver:
"During a 1289-mile round trip from Ann Arbor to New York, C/D’s long-term Acura ILX averaged 29.5 mpg. But its trip computer claimed 31.4—optimistic by more than 6 percent. We also took the long-term Kia Sportage to Washington, D.C., and back. Over 1064 miles, the Sportage achieved 24.6 mpg according to pump and odometer readings. However, its trip computer padded that figure by 1.1 mpg to 25.7—a 4.5-percent inflation. Every fill-up was slightly optimistic."

A 2021 AAA study concluded:
Error was from 2.3%, however, individual vehicles varied greatly.

AAA - on a 30mpg run 2.3% is a 0.69 mpg error. C&D Sportage 1.1 mpg error.
I'll take that as close enough and as AAA stated they vary greatly.
How about a link to the AAA study please.

 

[Lynyrd Skynyrd]

I don’t use torque news. Sounds like cnn for cars
I use real life check via hand calc and once I have it dialed it, it’s useless to hand calc as dash meter is spot on(within a teeth or 2)

 

[Old Man]

AAA - on a 30mpg run 2.3% is a 0.69 mpg error. C&D Sportage 1.1 mpg error.
I'll take that as close enough and as AAA stated they vary greatly.
How about a link to the AAA study please.

https://media.acg.aaa.com/aaa-tests-accuracy-in-vehicle-fuel-economy-displays.htm

 

[fossil]

https://media.acg.aaa.com/aaa-tests-accuracy-in-vehicle-fuel-economy-displays.htm

Thank you.
from the link
"On average, the fuel economy display of the vehicles tested showed an error of 2.3%. Individually, vehicle error varied greatly, ranging from ?6.4% to 2.8%. The negative number indicates that one test vehicle overestimated fuel economy by 6.4% or 2.2 mpg, while another underestimated it by 2.8% or 0.9 mpg. These specific results suggest that each vehicle reacted to changes in driving differently, and that the accuracy can be impacted by driving style and conditions."

It would be interesting to see which vehicles were tested as we know some makers are known for fudging EPA data and such. All I can add is in my experience 1 mpg or less has been the rule on my Fords. On the Raptor I can guess how much it'll take to fill by the miles to empty. When I get a new vehicle I keep the receipts for a month or so, jot the mileage on each and when there's time do the math to verify the accuracy or error.

 

[Old Man]

I think as long as people take the reading as a reasonable estimate people should be happy. Just like the EPA mileages that are computer generated testing results based on model data submitted from the manufacturer who generally submit the most optimistic models. Probably why the Maverick mileage ratings dropped this year.

 

[BruceK]

I've found the best way to judge the accuracy of the readings is to check the mileage when filling up. Start with a full tank, drive however many miles you want, and fell it again. Do the simple math. I've found that the readings are pretty accurate overall. I used to do this every week with my Chrysler Minivan when I had a very regular schedule of filling it.

 

[rlhdweman]

I had hand calculated a number of tanks & found the Maverick's gauge to read only 2% high, that's close enough for me.

 

[BruceK]

I had hand calculated a number of tanks & found the Maverick's gauge to read only 2% high, that's close enough for me.

That’s within any reasonable margin of error. I don’t expect the 40 mpg I get on my Chevy Cruze, but 30 on the highway is great for a truck.

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