Efficiency is eco friendly.
The more efficiently you burn the fuel the less exhaust you produce and you’re producing the same power with less fuel.
Yes ... It's a matter of emphasis or mentality. Ford engine designers seem to me to be interested in how much useful power and torque they can wring out of a gallon of gasoline. Ford marketers seem to me to be interested in talking about greenhouse gases. To me, the engines are a triumph of engineering. They're also starting to look like the end-game of a mature technology.