i have read up on hondas engine design for the civic or is it the accord, the engine is a higher compression ratio i think 10:5 just like our engine, in order for it to run properly on regular fuel they have oil sprays which spray oil right below the pistons to keep temperatures a bit cooler so regular fuel doesn't pre-denote as well as tune the engine for the same. While for us i suppose if it detects a knock it retards timing which in turn leads to performance decrease but we do not find it so, so I'm guessing it injects a little more fuel then it usually does?
On the other hand i wonder if the fuel test are done on a dyno with higher octane fuels?
btw speed isn't a high octane fuel its just like the regular one but has additives in it.
my building friend got a new honda city a month back and he never complains of low fe just goes and fills regular from any pump.