I was not the original poster, but here are my stats for the first 8000 km (5000 miles) on my Bose 1.2 TCE EDC, 19" wheels.
Average fuel consumption: 7,74 lt/100km with best fill-up number being 6,85 and worst showing 8,92 lt/100km.
The driving style is mild with a lot of low-speed but high-traffic highway. I recently noticed that EDC tends not to let the engine breathe correctly, so I am trying in the last fill-up to use manual gear change as much as possible. This way I let the rpm go higher in order to find the optimal gear-change spots. I am already showing 6,6 and the driving details (speed, traffic etc.) are not much different. Weirdly enough instead of 90-93/100 in the ECO2 counter, I get 83/100 so far. So, it looks like a by-design fault in the system.
ECO or no ECO makes no difference so far.