LOL. No replacement for displacement.
This aint for drag race.
TS is just going to work.

Lesser cylinders , smaller displacement = Better FC for city driving.
So are you saying (the older) Accord 2.0L will have better FC than Myvi 1.5L?
No replacement for displacement ma

Its only when you floor it, then your Myvi is "more fuel efficient" for racing.

You have to look into weight factor also. Lighter cars have better FC.