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      11-22-2016, 08:24 AM   #4
ianp622
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Drives: 2017 M240i
Join Date: Jul 2016
Location: FL

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Some reports say 5-7% improvement in economy, this real-world test with a BMW showed 9% for city driving: http://www.edmunds.com/bmw/3-series-...ings-test.html
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