PAULEB07

69 L46 4 Speed

Last week on the way home from Vet's n Vette's at the museum, I got 346 miles out of a tank (the DIC read 51 miles of fuel left when I refueled). Average speed was 78 MPH. 2013 GS convertible, MN6, 3.42's. I didn't check to see how much I put back in to determine the MPG's because I really don't care. I just fill the tank so I can drive some more.

dr_gallup

Who cares about the most? Much more interesting to see how fast you can empty it.

rkj427

still showed 21+ mpg at 125 mph on the highway...............

ran that speed steady for about 90 minutes without another car in sight........ daylight hours too.........

Bruze

Where were you, in Antarctica?

rkj427

no idea why the red marker showed up although there is a point of interest in the Chamberlain area....................

HOXXOH

Not exactly how many miles I got, but it's how many the computer expects would happen on the next tank full. Obviously, prior to the fill up it had averaged at least 31+ mpg.

SmileyOr

500+ miles on a single tank, twice. 2012 base mn6 all stock. Speed ranged between 60 mph and 70 mph. All highway miles.

LMB-Z

187 miles and not see another car...and during the daylight??? WOW!!!

Welker1

Same here, plus I try to never let mine get below a half -- just a habit I've always had

LMB-Z

When mine gets down to 1/2 tank, I start looking for a place to put more in. I'm pretty picky about what kind of gas I put in and where I buy it. I try to never let it get to 1/4 tank.

Mad*Max

This is after driving all day in Utah in the heat (all highway):

FortMorganAl

I've burned up 2 fuel pumps on various cars by driving to empty regularly. I have an 830 mile trip I make regularly and I can make it on one stop if I push it but then after a few years I have to replace the fuel pump because I overheated it by not having enough fuel to keep it cool.

I keep a record and reset gauges every fill-up. Current record seems to be 451.2 miles at an average speed of 73.0 and 29.8 mpg. My typical highway range is more like 390 which I feel comfortable doing because there will still be more than 2 gallons of "coolant" in the left tank with the pump.

Now today the gauge reads 10.2 mpg because I've been a naughty boy around town.

Matthewstorm

That's just insane! What makes your car so different from mine?!!

Bruze

What is your tank average MPG on a trip?

Matthewstorm

Between 300-350 max.

Bruze

MPG????

Matthewstorm

Oh, haha, Right.
Around 19.7 MPG. And that is 0% city driving.

Bruze

If that's all you're averaging on a highway trip (more or less steady speeds of 60-70 MPH as Smiley said) in a stock LS2 or LS3, then there is something wrong with your car.

But if you're hitting low speed limits, stop signs, traffic lights, making short trips, etc. then it is not a "highway trip." Huge difference.

I make a lot of 5 mile trips to the local diner, then back home. Some trips might be 50 miles 'round. My tank average is always right around 20-21 MPG. Normal.

A couple of years ago I filled it up, reset the meter, and went about 40 miles, half of it country driving, the second half on an interstate, and I was averaging 28+ MPG for that distance. Once I got off the interstate and into suburbia the average went to hell, as expected.

Corvette_Ed

I wouldn't know. I value my fuel pump too much to run the tank down to empty.