11-04-2012, 01:18 PM
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Registered User
Location: California
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Join Date: Aug 2004
Posts: 62
Mein Auto: 330ZHP, 958 Piggy, etc.
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Quote:
Originally Posted by quackbury
"Hitting it hard" has nothing to do with it. It takes a lot of energy to accelerate a 6,000 pound vehicle from a dead stop to 20 or 30 mph, a process which you are repeating over, and over, and over again.
It takes exponentially less energy to keep that same 6,000 pound vehicle rolling at 75 mph down I-80. Why should this be surprising? Did someone tell you that diesel repealed Newton's Laws? 
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I agree that the diesel blend and weight of the car may have to do with the mileage (e.g., diesel-engined semis usually get around 5 or less mpg). Or maybe bring your concern to the dealership to have the car checked - it wouldn't hurt.
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