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      10-25-2011, 12:34 AM   #47
RSchneider
Private First Class
Austria
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Drives: 2011 X3 xDrive30d
Join Date: Mar 2011
Location: Vienna, AUT

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Doing 60mph on cruise control in flat lowlands at around 0 deg Celsius I got just a tick over 6 litre, which translates into 39mpg (US). Pretty neat, I say.

At 100mph constant on cruise control on the autobahn in slightly hilly country at around 10 deg Celsius over 45 minutes consumption is around 9 litre, or 26mpg (US).

The increase in consumption between 60mph and 90mph seems pretty linear, the last 10mph cost maybe one litre (just an estimation).

Btw, done 1800km/1100mls so far. Overall consumption 30mpg (US).
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