I have been recording fuel consumption since December 2015 using Mobil Unleaded 91.
The car is a Mitsubishi Magna Altera LS TF 1997 with 250,000 km's on it, it's well maintained.
Majority of the driving is in stop start traffic.

Average fuel consumption: 12.97 l/100km
Best fuel consumption: 9.7 l/100km
Worst fuel consumption: 15.73 l/100km

I find it to be a bit thirsty but a great car (odd really as it's not worth anything)