I've just gotten a new Nissan Sunny 1.6 EX Manual last week.
When I took delivery of it, the fuel tank was half full. So I drove
till it's left with one quarter and pumped it full with Mobil 95
and reset the trip odometer. Drove till around 450km when the fuel
low light came on. When I re-fuelled, the distance is 457.1 km and
the amount of fuel used is 36.69 L.
So my fuel consumption on my new Sunny is 457.1 divided by 36.69,
which is about 12.5 km/L.