Some MPG results for you...
I have made several trips to and from Wisconsin with Suzi, so I thought I would make a comparison of the before and after SedanKamm results. Before: over 1200 miles averaging 48.0mpg; after: over 1800 miles averaging 50.9mpg. This is roughly 6% better gas mileage, which corresponds quite nicely to the 12.5% drag reduction experienced with the addition of the SedanKamm (the rule of thumb I have heard [and seen] works, is for every 2% Cd reduction you get a 1% FE benefit).
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