Okay. Someone who owns one. 28 to 32mpg is what I've got out of mine. More if you take it gentle. Gun it everywhere and it will obviously drink more than say the std 2.0l accord. I can get over 300 plus miles before the fuel light comes on and soon as it does I fill up. Not one for running on vapours. Then struggle to put 50l in more like 48l or so and that filling up the neck of the filler. So would tie in with 28 to 30+ mpg. I run it on Tesco Momentum 99 RON, with the occassional tank of v power.
I live 12 miles from work. Don't sit in traffic much, but is A road, B road, quite a bit speeding up slowing down between traffic lights and roundabouts. Pretty good really, I think the 2.4 would be similar?