top up vs top down fuel economy

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10-09-2005, 07:27 PM

oldfordtrucksrule

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top up vs top down fuel economy

how much ya think the fuel economy difference is in an average car goin down the highway with the convertable top up compared to the same car same speed with the top down?

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10-09-2005, 09:05 PM

jroehl

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I'd bet it's about a 5% maximum (probably less) difference, with the advantage(better mileage) going to top-up.

Jason

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