Honda 2013 NSS300 Owner's Manual page 26

E type only
Shows average fuel consumption in mile/gal, km/ℓ or ℓ/100km based on the tripmeter A.
Select the mile/gal, km/ℓ or ℓ/100km, press and hold the MODE button with the tripmeter.
After you reset the tripmeter A, the average fuel consumption meter shows "
RESET
SELECT
RESET
".
SELECT
SELECT
RESET
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