After an idle relearn i note that my fuel consumption became huge :
i put 2/4 of tank capacity what mean 22.5 L, it drop to 1/4 of capacity (11.2 L) after 40 Km that mean that the car drink 28 L for 100 Km.
Before the relearn it consume 8 to 11 L for 100 KM.

THX

Excuse my bad english and the metric system !!!