Hi Marcus,
From https://gb.e-guide.renault.com/eng/Kadjar/DISPLAYS-AND-INDICATORS
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Instrument panel in miles
(option to switch to km/h)
Vehicles not fitted with a navigation system
- With the ignition off, press the OK button 2 and the start button 6;
- using control 1, select “Settings”, “Instrument panel”, then the unit;
- Press the OK button 2 to confirm.
To return to the previous mode, repeat the same operation.
Vehicles fitted with a navigation system
On the multifunction screen, select “System”, “User profile” and “Unit”.
Note: In both cases, once the battery is switched off, the on-board computer automatically returns to the original unit of measurement.
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Hope that helps.
Happy Christmas.