Dear friends, Is the theory that a smaller engine is more economical in all areas of work than a larger one? I know that different cars/engines have been built for different purposes. A smaller 1.0L Hyundai i10 will definitely consume less in the city center than a large BMW 5 Series 3L machine, which swallows even more in idle to keep itself alive. Again, the 5 Series 3L is made for the long distance. Here it rotates at 160km/h. ch cozy 2500 rpm, while the little Hyundai 1.0L screams his soul out of his body and asks for salvation. But here I think more of the comfort idea in the foreground. A large long 3L limousine is designed for quiet, comfortable long distance even at good speed. But whether the 3L engine in this territory is also more economical?! Example to compare apples with apples: A 1.0L engine (no matter the brand) at 50km/h A 3.0L engine (no matter the brand) at 50km/h Here I guess That the smaller engine is definitely more economical. In particular, I imagine Stop and Gos as worlds of difference. But now to the exciting: A 1.0L engine (no matter the brand) at cruising speed 120km/h A 3.0L engine (no matter the brand) at cruising speed 120km/h Are there tables from when it would be more economical to switch to a larger machine? Or will the little ones, even if they are so tormented, be ever more economical?