unfitgeezer, welcome to the honda auto club. I’ve probably got the same engine as you (CRV 2.0 Vtec Auto) – and I too get awful fuel around town.
Best policy I’ve found in mine is not to drive it much.
I do think Honda’s are hugely over-rated; after having a new handbrake cable fitted for £168 the smarmy dealer said , “see you next year!” to remind I am driving the dream that is Honda. I should’ve reminded him of the faulty cruise control switch, **** handbrake, warped brake discs (twice), shocking mpg, easily scratched interior.
Don’t get me wrong, it’s an okay car but I find people are generally not honest enough about their MPG and their car purchases so you probably aren’t alone in your low MPG, especially given it’s an Auto.