Micra K13 - city fuel consumption?

[vasilero]

Hi. We recently bought a Nissan Micra K13 (year 2011), 1.2 Dig-S 98bhp, Tekna version, CVT, with 42k Km on board. Very well maintained car, smoothly running, the Nissan service said twice in the last month that computer diagnose indicates everything is working well but.... this car takes between 12 and 14 L of gasoline for every 100k in city traffic (I talk about real consumption, measured by filling up the tank and then refilling it after 100/200 km). This Micra overtakes soon the consumption of my Audi Q7, which is impressive, I have to admit :-) :-(. The Micra is driven by my wife, who neither forces this car nor pushes it to the limits. It's just normal city driving, start/stop enabled. We made a revision 2000km ago, at a Nissan service, when we bought the car, so the air filter, gasoline filter etc are all pretty much new and of course Nissan original. Please help me with some hints or advice if anyone experienced this kind of gasoline extreme thirst from a Nissan Micra that runs smoothly and gives no error to computer diagnose. I also mention that we learned from the interned about "resseting" the CVT to manufacturer specs, we did that, but in any way the engine was not revving - no, soundwise and driving-wise the car is running absolutely smoothly.