Subaru Crosstrek 2017 Owner's Manual page 206

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Instruments and controls/Multi function display
2. Operate the or
select the Eco History item. Then push
the button.
3. Push the button once more.
switch to 4. Select the time of the logged fuel
consumption history by operating the
or switch, and then push the
button.
5. Select Go Back by operating the
switch.
6. Select Set by operating the
switch and confirm the setting by pushing
the button.
7. The system will notify you that the
setting is complete.