I get about 12 mpg in the city; best mpg I had was 18.5 mpg on a recent 1K mile trip to Montreal. I have 555 hp so it's not bad
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Sold: 2020 X7 M50 White Mineral with Ivory & Blue, 2017 X6M Long Beach Blue with Mugello Red, 2014 X6M Monte Carlo Blue with Mugello Red, 2011 X6 5.0 Black on Black, 2008 E350 4Matic Silver, 2006 Infiniti M45 Diamond Graphite