Road trip MPG, 2019 Tahoe

tom3 · Jun 2, 2024

Took a 500 mile road trip today, Sunday. Light to medium traffic, two people with luggage, no drag racing, no big hurry, mostly at a couple above the speed limit. 2019 Tahoe, 5.3, 3:08 gear, mid grade gas. I'm pretty satisfied with this:

RST Dana · Jun 2, 2024

tom3 said:
Took a 500 mile road trip today, Sunday. Light to medium traffic, two people with luggage, no drag racing, no big hurry, mostly at a couple above the speed limit. 2019 Tahoe, 5.3, 3:08 gear, mid grade gas. I'm pretty satisfied with this:

View attachment 429633

As much as you like to believe what you see. M2’s are known to mislead up and down. Your best option is to keep a log and/or perform manual calculations to get C an accurate number. I have been using the fuelly app for five years and have logs for all 3 k2s.

tom3 · Jun 3, 2024

I checked that readout a couple times before and it was within a tenth or so on the averages. Very little down time or city driving with this trip. The technology does work, if they could just get the reliabilty improved.

Congtoid · Jul 2, 2024

Do you still have the AFM/DOD active?

swathdiver · Jul 2, 2024

tom3 said:
Took a 500 mile road trip today, Sunday. Light to medium traffic, two people with luggage, no drag racing, no big hurry, mostly at a couple above the speed limit. 2019 Tahoe, 5.3, 3:08 gear, mid grade gas. I'm pretty satisfied with this:

View attachment 429633

That's awesome!

tom3 · Jul 3, 2024

And got the same average on the way back, did see 23.1 mpg for a while there. AFM and all stock tune as new.

Loki223 · Jul 8, 2024

i took our burb out this past weekend for a while, was getting a pretty solid 23 mpg @ 75 mph. I wouldn't be surprised to gain another MPG or two by dropping to 65-70, 65-70 is where i've always been the best highway mpg on my various rigs over the years. Except my 74 K5. It could not do 70...something about low gears and a SM465 that was geared in ultra low, really low, kinda low, and driving.....

Jeff_ · Jul 11, 2024

Nice. I just drove 4200 miles round trip in mine up to Banff Canada, areas of the PNW, and back. Averaged 19.2mpg but I also set the cruise control at 87-89mph on Interstate 15 from Vegas to Missoula Montana (and the same on the way back). And I have AFM disabled.
So not bad for being loaded down with a bunch of gear and the aerodynamics of a refrigerator.

Road trip MPG, 2019 Tahoe

tom3

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RST Dana

tom3

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Congtoid

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swathdiver

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tom3

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Loki223

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Jeff_

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