Honda's claim of fuel mileage cant be put into comparison today, since the H22a came out in the early 90s.
but from an H22a owner's experience, my auto H22a (190PS) gets around 8.5km/l, urban, stop and go, while my manual H22a (220PS) get better mileage due to it's more efficient transmission. nearly 10km/l. I just went to KL and back to JB this past weekend, and at a steady 140km/h cruise, the manual H22a used less than half a tank of RON95.
Currently, the manual H22a is showing 1060km, and has used around RM180 (100 litres) of fuel. That's with a relatively short sprint (Tangkak - Pagoh) with a CL7R with my car bouncing off the dreadful 180km/h limiter.