cali gas mileage

I've had my 2010 California just over a year... the car has consistently gets about 220km or a bit more per tank, mostly city driving. Example, today, filled in 52ltrs, with 177km on the trip odometer, and it could go no more, maybe another ltr most. I have a 78 ltr tank, that means I have 25 or so remaining...

It works out to 3.4ltrs per km... that's crazy bad.... had the car tuned up, fuel level sensors checked, new spark plugs... Dealership service said nothing wrong... I don't drive it hard... I know you need to pay to play, but this cannot be right... What can be wrong? I don't smell gas, so no leak... suggestions?

 

I've had my 2009 Cali for just over 2 years and driven 25k miles, it's just too much fun to leave it in the garage. I'm averaging 16.84 mpg Imperial, so that's about 14 mpg US. On a steady run across France I managed just over 20 mpg (16.6 US) and get 14-15 (11-12 US) driving enthusiastically through the local countryside.

That said I don't care. If I was worried about fuel economy I wouldn't be driving a Ferrari. I only keep a record of it to see whether there is a marked change that might indicate other issues.