– Why can V6 engines not just get “smaller” for fuel efficiency vs going Turbo V4?

Question

I guess what about having extra pistons makes mpg worse vs. 1.8L, 2.5L, 3.5L, etc.?

In: 168

Answer 1

The more cylinders you have, the more moving parts an engine has, which leads to increase potential for wasted energy and also increases wear and decreases life expectancy of the engine, so it’s much more smart for manufacturers to make a turbo i4 engine vs a turbo small v6 engine (same size as the i4)