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boxster03 boxster03 is offline
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Join Date: Jun 2005
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12 mpg at 70mph interstate driving is not good. I get about 18 or so if I keep it around 70. I would check the tire pressure. Air filter plugs fuel filter etc etc etc. It should not get that bad of mileage

if it is tuned and you are not pulling a trailor or loaded with tons of gear or have the o/d off or doing 90 then it should get upper teens.

If you are doing all the above and still getting around 12 I would discuss it with the dealer and have them put it on the computer and see if it shows any problem codes.
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Old 03-09-2010, 04:15 PM
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