Got my 2012 X5d back in July and have been keeping a log of MPG since. It was around 19 for the first two months and jumped to about 21 over the last 2 months for an average of about 20. This is with 70% city (very hilly) and 30% highway. I'm hoping the MPG will keep getting better because this is not too exciting... Of course my lead-foot style of driving is probably not helping...

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Current:
2021 X7 xdrive40i

Retired:
2018 X5d
2015 X5d
2012 X5d
2010 X5d
2006 330i