# Will fuel consumption be the same at constant speed between two engines of different power?

We have two same cars,same weights,just with two petrol engines, one has 200hp and second has 400hp.engines have same efficiency factor.

In theory at same constant speed at highway of 140km/h cars have same drag so power delivery from engines must be also the same.

Will fuel consumption be the same for both engines at that constant speed?If not way?