it all depends on where you live and the amount of stop and go that happens during your drive.they really really underrated the mileage on the Type R. mine isn't even broken in yet (less than 2500 miles on it) and my combined is 29-31 mpg
Here is the mods for that carPRL's modified Si beats that in all aspects.
then you have my old Focus ST that just had a ford racing tune and I only averaged 24mpg. I've got 900 miles on the civic and it's already getting better gas mileage than the ST.Lol, so many cars can achieve this the type r is a great car but isn’t something that amazing.