sensinitas
Member
- :
- 08 Mazda 5
So I took the box off the top of my car for it's detailing this weekend. Lucked out that I had to drive to the desert and back today starting with a full tank of gas. I had to fill up on my way home, but I averaged around 6 mpg better WITHOUT the box.
With the box = 21-23 mpg
Without = 28 mpg
With the box = 21-23 mpg
Without = 28 mpg