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Registered User
Join Date: Jul 2011
Posts: 1
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Poor MPG Cayman S
I took delivery of a 2011 Cayman S with 6-sp man in Dec 2010 and presently have 3,600 miles on the odo. I live in a suburban/rural area, so most of my driving is in 4th through 6th gears. I tend to shift around 3,000 RPM and seldom drive aggressively. Why, then, am I averaging only 20 MPG (using 91 octane gasoline)? The tire pressure is correct. My Porsche dealer is stumped.
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07-22-2011, 08:00 AM
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SCCA/PCA autocrosser
Join Date: Jul 2011
Location: Albuquerque, NM
Posts: 22
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Sounds like you should be closer to 25mpg. A friend that has an 06 S gets about 22mpg in mixed driving in a city. Do you perhaps not upshift and keep the cruising RPMs above 2500rpms?
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07-22-2011, 08:48 AM
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Registered User
Join Date: May 2011
Posts: 39
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I found my Boxster (03S) got better mileage when I tried to keep the revs at 3K and above. I would say it bought me 2-3 mpg. Think I'm getting about 22 around town, as high as 28 highway.
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07-23-2011, 05:39 AM
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