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fueleconomy.gov rates the x5m that same as my Porsche. 14/19
the 5.0 is a little better 16/22.
I have test driven an 2012 x5 with the 5.0, but it didnt have the m sport package. I havent driven the x5m yet.
Are there any maintenace concerns on the x5m?
Is the suspension different on the x5m than the standard model?
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