Thread: Diesel X5: Tips to improve MPG?
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      03-16-2021, 07:57 AM   #12
M5_1of400
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Drives: 2018 M5 / 2011 X5 35d
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2018 M5 First Edition  [8.75]
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Also check your thermostat, if it is bad and coolant doesn't reach proper operating temps that's a big MPG killer.
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