I averaged 13 mpg with mostly freeway driving in about 8500 miles with my X5M. In M mode/sport in city driving I couldn't get more than 10 mpg, and with 100+ miles on my daily commute, I was filling up every other day. I don't see how it would be possible to get anywhere near 20 mpg without 2 more gears. It makes me wonder if they'll ever put the 8-speed transmission in it.
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2017 F-type SVR Black/black
2017 Nissan GTR Red/black
2022 BMW X5M MBB/SO
Gone but not forgotten: '12 X5M, '07 AM SuperVantage, '05 Boxster S, '01 BMW M3,...
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