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Best MPG over 100 Miles?

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Old 07-24-2014, 02:24 PM
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Cheekymonkeyman
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Had a long journey ahead so decided to test the willpower of my right foot to see how high I could get my MPG over 100 miles...a realistic range. So I set my ACC to 70mph, sat back and waited. Traffic wasn't perfect and I think I could have nudged 40 mpg at slightly lower speeds but that was asking for just too much patience. I nearly killed the experiment when a gorgeous white 991 cab shot past but held in. Trust me... Once the photo was taken the ACC turned off and the MPG got back to where it should be Incidentally this is UK (yes it does get that warm over here sometimes) .. So the MPG might be calibrated differently to US (x1.2)
Old 07-24-2014, 02:31 PM
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Weim911
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Originally Posted by Cheekymonkeyman
Had a long journey ahead so decided to test the willpower of my right foot to see how high I could get my MPG over 100 miles...a realistic range. So I set my ACC to 70mph, sat back and waited. Traffic wasn't perfect and I think I could have nudged 40 mpg at slightly lower speeds but that was asking for just too much patience. I nearly killed the experiment when a gorgeous white 991 cab shot past but held in. Trust me... Once the photo was taken the ACC turned off and the MPG got back to where it should be Incidentally this is UK (yes it does get that warm over here sometimes) .. So the MPG might be calibrated differently to US (x1.2)
Wow. I'm jealous. I better improve on my 11mpg.
Old 07-24-2014, 03:05 PM
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Cheekymonkeyman
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Lol. I was expecting someone would claim 'the best MPG' is the lowest !
Your 11mpg must be due to all that extra loading in the rear seats
Old 07-24-2014, 03:19 PM
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ipse dixit
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Wow. Impressive.

Was someone pushing your car? Down a hill? With a stiff wind in your back?

Best I've gotten was around 29.5 MPG
Old 07-24-2014, 05:39 PM
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Homeles
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Why?
Old 07-24-2014, 05:54 PM
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eg991
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I average around 15-17 MPG, generally combination of stop and go and highway driving. This car is way too much in the upper range of the rev band to think about MPG.
Old 07-24-2014, 08:09 PM
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mi650
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Best I've ever gotten was just over 30.

OP, I'm wondering if your car is calibrated for the larger imperial gallon?
Old 07-24-2014, 08:45 PM
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WCE
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About 32.5 mpg US.
Now don't reset it for a few thousand miles and due to a glitch it will read about 100 mpg!
Old 07-24-2014, 10:24 PM
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ruhlich
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Originally Posted by Cheekymonkeyman
Had a long journey ahead so decided to test the willpower of my right foot to see how high I could get my MPG over 100 miles...a realistic range. So I set my ACC to 70mph, sat back and waited. Traffic wasn't perfect and I think I could have nudged 40 mpg at slightly lower speeds but that was asking for just too much patience. I nearly killed the experiment when a gorgeous white 991 cab shot past but held in. Trust me... Once the photo was taken the ACC turned off and the MPG got back to where it should be Incidentally this is UK (yes it does get that warm over here sometimes) .. So the MPG might be calibrated differently to US (x1.2)
Good for you. I'm impressed. My average, by pump and calculator, is 24.4 mpg over 6,000 miles. I've nudged 35, but not for long enough to brag about it.

I don't care what Homeles thinks.
Old 07-25-2014, 10:48 AM
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clangpap
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Originally Posted by mi650
Best I've ever gotten was just over 30.

OP, I'm wondering if your car is calibrated for the larger imperial gallon?
That's an interesting question. We have a Canadian car, so kilometres is the standard. I switched the display to "miles" when we were in the States last weekend, for ease of speed limit conversion, and recorded 32.8 mpg on the freeway. I don't know if that's imperial or US. Anyone?
Old 07-25-2014, 04:53 PM
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Justin N
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I did a road trip from Chicago to NY in my C2- Close to 800 miles and got 34.9 mpg. Had "Eco" mode so it disengaged the clutch and idled down hills. I wasn't going too slow either, most of the time was cruising at around 85mph. I did cheat a little in that I reset the mpg indicator once I got outside of Chicago but still seemed really good for a 350hp car...
Old 07-26-2014, 11:51 AM
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Dalema
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In you face Prius !!



Yes it was a downhill stretch, but then we hit the twisties and things went south fast

~~~~~~~~~~~~~~
~~~~~~~~~~~~~~

But after some highway travel ended up with



This is US mpg.
Old 07-27-2014, 10:49 AM
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John 996 TT Cab
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Originally Posted by clangpap
That's an interesting question. We have a Canadian car, so kilometres is the standard. I switched the display to "miles" when we were in the States last weekend, for ease of speed limit conversion, and recorded 32.8 mpg on the freeway. I don't know if that's imperial or US. Anyone?
I have Canadian car and I'm pretty sure the mpg is imperial when you switch to non metric.
Old 08-07-2014, 02:22 AM
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We have a C2 with 21K and regularly get 32 mpg on the interstate with the AC on. Two adults and a seventy pound dog with a glass sun roof.
Old 08-07-2014, 02:37 AM
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Originally Posted by John 996 TT Cab
I have Canadian car and I'm pretty sure the mpg is imperial when you switch to non metric.
Just updating my settings since the car was PDI'd after delivery in Victoria today - you have the option for L/100 km, US mpg or Imperial mpg in the display - and you can change the digital speedo independently to read km/h or mph.



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