Yes, even on the highway.
as it turns out, that’s not true.
For the SUV, the difference was much bigger, and actually increased at high speeds.
Why rolling down your cars' windows is more fuel efficient than using AC| Vox
Roll Your Windows Down Instead of Using the AC to Save Fuel
When it comes to cooling down your car, it turns out there's really no more fuel-efficient way to do so than to roll your windows down. Yes, even on t
