11.3L/100km currently as calculated by Fuelly (idrive thinks i'm at 10.8), but that's mixed city / highway and I'm sorta feeling out the engine right now
ECOPRO is a bit pointless for me as most of my trips are on the highway anyway. Around the city ASS kicks in anyway.
I notice the following ECO PRO behaviors: if you're cruising on the highway and you flip to ECO PRO mode without changing your pedal position, you'll instantly see an improvement in your F/E due to throttle remap... but you'll feel the car slow down. However, if you're on cruise control and you flip to ECO PRO, you get *NO GAINS* because the throttle is already being controlled electronically (makes no diff since the car is maintaining speed)