knewblewkorvette

Yeah, I've noticed my 99 with H/C AND SC gets better gas mileage than my near stock 02 (both 6-speeds). I just did a 180 mile trip with the 99 and got a unbelievable 33.4 mpg. And yes, I was speeding....allot

crazystevex

I got 34 mpg when my 2000 was stock and after headers and cold air intake I get 32.5 regularly on the highway

zeevette

Dayam, that's great MPG!

neutron82

don't get me wrong, the scenery is nice to look at but I can't be stuck in a car for that amount of time... I will cruise around in mine for an hour or 2 tops and that's enough for me... if I were going on a long road trip I would much rather be in a roomier car or suv with someone else driving and then I might enjoy it

obviously I use mine differently than a lot of the guys around here but I thought some of you would get a kick out of this... this is what e85, a lot of power, and proper driving will do to your gas mileage... it might get a tad more if you baby it (no fun) and actually do the math instead of relying on the average mpg on the dash but it isn't a whole lot better, nothing to write home about anyway

JR-01

To each their own.
I would rather drive a '63 Corvette convertible across the country than an SUV. The C5 is a great touring car.

mrlmd

I've done two 1200 mile trips on my 2000 A4 from FL up to NJ and back last year (2400 miles each) and consistently got 30mpg for multiple 8-9 hr. stretches at 70-80+ mph. At that speed with the engine only turning at 1800-2000 rpm the fuel consumption is minimal. Most of the lower gas mileage is from starting from a standing stop or riding in stop and go traffic in town. My overall mileage around town and shorter 25-50 mile trips is ~24-25 mpg. Aside from just being fun to drive, the fuel economy is a plus. And this is a great road car for a long trip, very comfortable as well as reliable.
You can get whatever you want on your DIC as far as fuel mileage - stomp on it and it will read 9-10 mpg, take your foot off the pedal at 60+ and coast and it will read 40-50 mpg. for instantaneous mileage, but go on a long trip and then you will see the 30+ average readings, or calculate it yourself from the fuel usage and miles driven.
Pay attention to tire pressures too - it makes a significant differences on a long road trip/

Swoop Dogg

Since we are on the topic, does anyone know if the "average mpg" is a rolling number? And if it is, how many miles? 500? 1000? I've always assumed it was, and a lower number at that. I remember when I got back from a road trip averaging 28 and watching that number drop over the next couple days. A higher number would've kept my average up longer than it seemed it did.

BHS.SWM

I routinely get over 30 mpg in my Vette. Part of that poor American engineering. ..

strand rider

took me awhile to grasp the question, the average MPG function runs the calculation for average MPG until you reset it. More time means more input.

strand rider

Glad to hear the great reports about road trips.

I have taken old cars into the California sierra's before, but never with one so complicated. Glad to hear my future goals are somewhat reasonable, time will tell.

I was outside a parts store and was talking to a guy with a fancy new porsche that caught my eye. We both got about the same gas milage around town, but his face fell when I mentioned my highway milage. He had no idea, said he.

Mikegerm_C5

That's where I'm at!

whalepirot

I believe it's a moving average number with much shorter lookback than other cars owned.

Yup. I believe you'll find the car computation slightly optimistic.

In addition to TP, I find uphill/downhill decays the average, versus flat terrain. Hell, my Smart Cabrio's best was 42 (3 cylinders)/worst was 28, so this C5 is amazing! Noice, minimal cross section pays off.

My Vette Life

Embarrassed to say 16 mpg for my C5 6 speed but that is street.

neutron82

sounds more truthful

My Vette Life

I just wonder what it would be after a tune.

neutron82

when I was on pump gas I got about what you are getting now if I babied the car but that's no fun to me... my car was tuned to make power not get more mpg

Mickeyrx70

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The Owner's Manual says the average fuel economy displayed on the DIC is based on the current tank of fuel or from when the display was reset. I interpret that to mean it's a rolling average based on the last 18 gallons or so, unless you reset the display.

My Vette Life

Maybe it's because I don't use 6th gear.

Mike98SilVert

I saw a Corvette on I95 heading to Florida and the licence plates said "Why Fly"

ArtClassShank

Same, 6th is borderline useless around my area. Traffic varies from 60-75 all day long, don't like not having a little power to accelerate. My average MPG is around 18.5MPG mixed city/highway. The one 400 mile trip I did take the C5 on, was PA hill country but I still eeked out a solid 24MPG. Few spurts to 120. My old Honda would get 26-30 all day, did not really care how you drove it.