This memory erase method to get better fuel consumption is bullshit !!! - Sorry !

The car is CONTINUOUSLY learning and if anything will take longer to learn its new settings after a reset.

If it is drinking too much fuel, it has a fault or you are driving like a twat all the time

People forget it is a performance car and it will drink fuel if you cane its ass off.

Get a 1.1 fiesta diesel if you are that worried