Not my car, but pa's Dacia Stepway daily - used a Bluetooth ODBII dongle and ddt4all on my laptop to enable the full trip computer that the factory wanted ~300 bloody quid for as an option 
Also enabled the dash backlighting permanently rather than just coming on with the headlights, because the km/h marks are small red numbers on a black background and he finds it hard to read them when driving on the continent.

Also enabled the dash backlighting permanently rather than just coming on with the headlights, because the km/h marks are small red numbers on a black background and he finds it hard to read them when driving on the continent.