This is the way of the world these days — small, boosted engines are designed to meet Corporate Average Fuel Economy standards first and foremost. (automobilemag.com)
I'm assuming it's there only to serve the interests of Corporate Average Fuel Economy, and it will get used about as often as the dusty buttons on your universal remote. (bestride.com)
In practice, that ties the window - sticker numbers to much older, easier tests for Corporate Average Fuel Economy. (automobilemag.com)