Well, in the US OBC, when you have the avg fuel economy showing on the cluster, depress the OBC button at the end of the turn stalk for a few seconds. The computer will then reset to zero and begin recalculating the avg fuel economy from that point forward.

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David

Macan Turbo / 997.1TT (gone) / e83 (gone)/ e46 M3 / e90 335xi (gone)/ Sienna XLE Ltd
B7 A4 2.0T CVT (gone) / Pilot EXL-RES (gone)