I just checked some old fuel dockets and my FE was around 7L/100 km
Regarding the car, the motor is similar to the Echo but it was detuned to go in the Echo, at the time 1999/2000 it was the most powerful N/A 1.3L ever put into production.
Just topped up the tank and pumped the tyres up to 40 psi from 30 psi, I got 5L/100 km not a bad reduction for the first tank.
I drive the car for work repairing office electronic equiptment a lot of the trips are short and barely warm the engine up so the grill is getting a serious study.