[302crossram]

Originally Posted by Dynamical

One of these days just for the hell of it I'll take a long highway trip with the cruise set and see what I get. I have no doubt I can get what you got. Every summer I drive from CT to FL so maybe I'll take this car. I'd just have to stay out of the NY/PA/VA mountains. The air sucks! I usually don't use this car for that sort of trip though. I have a Honda for that shit

FL is flat, you discon the range you may get 36 @ 60mph with the corn free fuel

disclaimer (I'll never run mine with the afm engaged)

[The Chief (tm)]

Religiously-maintained OpenOffice spreadsheet sez:

- 20.84 MPG over 13,109 miles since I picked up rig in January of 2022

- Best tank MPG: 27.93 (covered 475 miles between fill-ups)

- Worst tank MPG: 13.33 (during a rough stretch of wintertime fill-ups in Tennessee in Feb. & March 2023)

Have not always used "Top Tier" brands, but IIRC only once did I need to resort to 91 octane.

[goata8]

I have on both of mine..

My 2017 SS averaged 16.8 over the course of 33,000 miles.

So far my 2023 LT1 averages 15.2 over the course of 1,800 miles.

[Dabjbr]

I had a long drive today. 300 mikes round trip. This was the best I achieved with conservative driving.

[arpad_m]

What a strange thread But let me play anyway: my best is 32.4 mpg (back when the car was stock-ish) and lifetime average is 18 mpg.

[ember1205]

I don't waste my time with the info in the dash... it's never accurate. I track all of my fill-ups with Fuelly through the aCar app. I can access all of my data on the fuelly.com web site.

I'm also able to track service records along with things like work done, costs, and even images of receipts.

I typically see a drop in MPG when the winter blend fuel starts making its way into the supply. My truck dropped more than typical last year and I didn't know what to make of it. Then I got a CEL, but it cleared itself. A month later, it returned. An OBD II dongle and Track Addict software helped track some meaningful data to learn that my high pressure fuel pump was leaking.

So, yeah... I track it. But it isn't "for fun." Changes in MPG that you can't correlate to something specific can be a sign of a larger issue.

[Idaho2018GTPremium]

Dang, and I thought I was anal. Y’all that are spreadsheet tracking every tank of gas is a whole new level of anal. Why?

[ember1205]

Let's see if THIS works...

[Bumbleboy92]

Originally Posted by Idaho2018GTPremium

Dang, and I thought I was anal. Y’all that are spreadsheet tracking every tank of gas is a whole new level of anal. Why?

[nikerret]

Originally Posted by Idaho2018GTPremium

Dang, and I thought I was anal. Y’all that are spreadsheet tracking every tank of gas is a whole new level of anal. Why?

For me, it started because I needed to account for business versus personal use. Since 2016, I can account for every dollar spent on each of my vehicles. Part of this is the MPG of each tank.

[jollymon]

Interesting, I had never really considered mpg. When it drinks 93octane, all about performance and cool factor, and cost $55k with no real practical justification, the mpg was not even a consideration.

Looks like I never reset Trip B... just looked and I'm at 18.9mpg for first 4500-ish miles. Guess I am not driving it hard enough

Edit: FWIW my '15 1LS V6 M6 long term average is 25.3mpg. Drive it like I stole it 90 miles/day since 2015

[greenz28]

Yes I do. 25.6 mpg average for the last 18K miles. That's 50/50 interstate and highway but also beating on it at about every opportunity - most stoplights/4 way stops, getting on interstate, etc.

[Plasar]

My 2017 ZL1 6 speed. Recently, too much city driving and short trips. Maybe a lot of idling with the AC on.

[JKOR]

4 fill ups so far. averaging 20.5 mpg 1SS 6 speed.