Mabuhay

Who needs a hybrid? Driving 95 miles and not "gunning it" in anyway shape or form, I got 28 mpg with my X51 C4S as shown in the pic. The trip computer stated a 74 mph average for that highway drive. Note, however, that I was driving the middle or right lane since averaging 74 mph in CT and MA on a Sunday is slow. People were blowing by me on the left lane. To see what the mpg would do if I downshifted into 3rd, it dropped to somewhere in the low 27's mpg just for that short mash on the gas.

Barn996

How did you attain that mpg? My best is 24.3 mpg and I'm happy with that on the highway.

Tim Wasmer

Mine will hit 30mpg (03 C4 Cab). My 03 C4S from a while ago would easily do 34 (I have pictures somewhere). I love my Econobox Porsche

Mabuhay

I stopped to get gas, filled it up, zero-ed out the mpg and mph, went on the highway and left it in 6th gear.

MiamiC70

That is pretty good I got averaged about 26.5 on way from Miami to Daytona last year but there might have been several instances where "possibly" I was going much faster than 74mph

dosie

I got 26.8 on my trip from Detroit to Charlotte thru the mountains, but, admittedly, I was in the right lane doing seven over after my speeding ticket in Detroit!

tnj100

I can get in the 32+ range on all-highway driving (2004 C2 Cab). I'm not a super aggressive driver, but that's averaging 75 - 80mph on the mean streets of New England.

white99c2

I've been averaging 27.8 the past 3 tank fills. It is an amazing car!

Edgy01

You're obviously not enjoying the car enough! Stop with this fuel economy obsession!

teoulennon

I guess I'm doing something wrong..
i only get 20mpg going 85mph the whole way

Pac996

Might try getting a rough estimate of speedometer error. Drive the hwy, zero the trip odometer at a mile marker, start your travelling watching the mile markers. Calculate the error bouncing the trip meter off the total miles travelled in mile markers. Not totally accurate but you'll get a good rough idea arriving at the first mile marker travelled. I'm registering 0.8 mile odometer at the first mile marker. This figures to calculate gas mileage divide odometer by 0.8 to get actual miles travelled. Then divide by gallon (liters) filled.

Bad news is I'm one of the low 20's or 18's mpg suffer's and it's a pretty new porsche rebuild.

For you guys with high mileage it might be a case of smaller than standard diameter tires registering higher miles than actually travelled.

jackarelli

Hi.
Maybe its the petrol that you guys have in the states but my 99 c2 will give me c34.4 mpg @ 70 mph
When i first got the car i wanted to see ho efficienti could drive. I drove 126 miles brighton to dartford and back with some stop and go traffic and got 36 mpg average.
Jack

Pac996

You're right. There is a big difference in the size of a gallon UK-US. I didn't think of that till I realized you guys are not in the states. 10 UK gallons = 12 US.

In Hawaii we have super lousy ethanol.

Mabuhay

Not a tire issue. I think you have a heavy foot issue...

Try this: Go on a long stretch of flat highway, zero out the mpg and set the cruise control at 75 mph or even 65 mph. Then see what your mpg says. If it's not in the mid to high 20's then something may be wrong.

ivangene

OK I bit my tongue long enough

WHAT THE H&LL

is this a hyper mile - prius forum!!

I want to hear, I got 6 mpg and went through a tank of gas by lunch - I mean OK we know they "can" get good milage but you are NOT helping your car - those three letters everyone hates to talk about need to be driven...spun up, worked, and your piston tops need the same thing - all this putting about at 2k rpm is killing your motors - and my spirit!!

GO DRIVE THEM - red line is not an option, it is a daily event - many times - many many times - daily!

try that thing between the seats...use one number closer to (0) than (6)

ARG - these threads are SOOO boring!!