MPG Shout out

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rs4-380

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I don't know how y'all are getting those mpg readings. At best i'm at 17mpg, and usually 15.5-16.0, basically all highway driving (80-85mph), just me driving.
I've found a pretty significant drop in fuel economy over 80mph (like a 3 mpg difference between 80 and 85).
 

Paul M

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2020 Platinum Max with 34,000 miles. We just did a small reunion trip from Edmond, Ok. to Angleton, Tx. 500 miles each way plus site seeing around Galveston, beach driving at Surfside, Tx. and what we called the nostalgia tour of driving around looking at where we grew up. 21.5 mpg with four adults with luggage and I filled up once in Oklahoma and once in Texas. Highway speeds were 65 - 80 except for rush hour in Dallas and Houston. I was very pleased.
 

TheDoug

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I don't know how y'all are getting those mpg readings. At best i'm at 17mpg, and usually 15.5-16.0, basically all highway driving (80-85mph), just me driving.
When I go over 80 my mpg falls below 20 and usually in the 18 range
 
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VBreithaupt

VBreithaupt

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I have experimented with cruising speeds of 75-80 mph. 77 mph is about tops for keeping it at 2000 rpm and dropping down to 75 I didn't see any significant increase in MPG. Maybe others can do experiment as well but 77 seems to be the magic number for me with little hard braking or accelerating. I do think the adaptive cruise helps eliminate the hard brakes if watch and sense traffic in both lanes.
The best gas mileage could be attained by feathering the gas to eliminate hard accelerations and coasting on down hills but you really have to like being engaged in the road. I saw a study that a guy had done, cruise vs adaptive driving. It was a car and not a giant brick like ours but he claimed a 3-5 mpg increase over cruise by doing the above. I love driving but sometimes like to look around and just lean back and relax. The EXPY does that well.
 

3rd Expyowner123

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2018 4 X 4, HD Trailer Tow, short wheel base, driving 80mpg, 300 miles each way, 3 passengers & luggage. With a estimated 30mph tail wind, computer showed 22mpg. Return trip against the wind, 15.1mpg.
When I tow my 21’ boat at 75mph, typically get about 12 or possibly 13mpg.
 
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I don't know how y'all are getting those mpg readings. At best i'm at 17mpg, and usually 15.5-16.0, basically all highway driving (80-85mph), just me driving.
On my cross country drive, I noticed MPG dropped significantly over 80mph. I know some places have speed limits that high, but i found staying at 72-75mph got me in the 20mpg range.
 
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I have experimented with cruising speeds of 75-80 mph. 77 mph is about tops for keeping it at 2000 rpm and dropping down to 75 I didn't see any significant increase in MPG. Maybe others can do experiment as well but 77 seems to be the magic number for me with little hard braking or accelerating. I do think the adaptive cruise helps eliminate the hard brakes if watch and sense traffic in both lanes.
The best gas mileage could be attained by feathering the gas to eliminate hard accelerations and coasting on down hills but you really have to like being engaged in the road. I saw a study that a guy had done, cruise vs adaptive driving. It was a car and not a giant brick like ours but he claimed a 3-5 mpg increase over cruise by doing the above. I love driving but sometimes like to look around and just lean back and relax. The EXPY does that well.
Cruise control is terrible for MPG. Way too boost happy!
 

Wangle

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2018 Limited 4WD w/tow package. Trip to Florida from Iowa, six passengers, loaded with luggage and a large car topper also full. 87 octane. 70-72 mph. Monitor said 21.4, actual 20.3. As usual, monitor was about 5% optimistic… We were thrilled. Our 2003 got 16.1 a few years ago on the same trip. 91-93 octane will get us about 5% more. Keep your speed down. When using cruise control select “Eco” mode and the recovery to speed is much more gentle, saving gas!
 

Tmg115

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I guess I am fairly lucky with my mileage. I get 17-20mph mixed driving (60%highway, 15% county roads, 15% city).

My last road trip I got 23mpg all highway doing 80-90mph from Austin to Fort Worth. The picture says 24mpg but hand calculator said 23mpg.
 

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