your main interest is in the fuel consumption rite?
the lower the RPM, the better the fuel consumption. only true when you're cruising and maintaining the same pressure on the accelerator.

but lets say (for Auto) you're driving at the lowest RPM with the lightest pressure on the accelerator, the gearbox might not change to the final gear, thus you're wasting petrol because slower when compare to final gear speed at the same RPM.

and for Manual, because of the assumption that lower RPM gives better FC, you might change gear too early and thus need to have higher pressure on the accelerator to build more momentum, which lead to wasting petrol.


basically to get lowest FC, is to get the optimum pressure on the accelerator vs the RPM speed.
but this is my theory lar.
correct me if i'm wrong.

1.3? 1.5? 1.6? 1.8?

mine 1.6 110kmh@3k rpm