Yuuuup. While that’s nice and all, it’s important to keep it mind in the proper context.

They may be able to advertise the feature (and indeed, that’s why some cars do have it), but it’s a costly feature. Meanwhile, that legally-mandated MPG rating is sitting in the corner scaring customers away. As a manufacturer, if you have the choice between a.) adding an expensive feature that you have to explain,…

The JD power Quality Award for Highest Customer satisfaction in it’s class*

For example, Ford was reluctant to add a start-stop feature that would shut off the engine at stop lights to conserve fuel, because EPA tests don’t take it into account.