Re: Fuel usage
Since you asked in metric:
Over the lifetime of my 2011 V6 (about 79,000 kms), I have an overall average of 12.6 L/100km from date of purchase, which is of course a mix of everything from city to highway to idling in the winter to warm up, but I do a lot of highway.
On the better tanks of pure highway driving I can get it down to about 11.4 L/100km.
All with 10% ethanol gas.
2011 GC OL, Natural Green/Frost, QL, ORGII, 430N, Pano, GY WSA