35 Yr Dsl Veteran
Veteran Member
I ordered vent visors for my 2012 TDI. Included was a nice spoiler/deflector for the skyroof, which I do not have. I mounted it on the top of rear hatch, to see what effect it has on rain, road spray, and dust on rear window.
Well, today going down a flat, level highway at 65 MPH actual (67 indicated), I was surprised my MPG was especially low, consistently only in the upper 20s. So I pulled over and ripped off said spoiler, and resumed trip at same speed, same flatness of road. Without spoiler, it read OVER 30 MPG, and consistently as I experienced before; 33-35 MPG!!! Plus, one stretch of the two-lane road, there was a line of slow vehicles, and backing off to 60 MPH, my MPG approached 40 MPG!
Well, today going down a flat, level highway at 65 MPH actual (67 indicated), I was surprised my MPG was especially low, consistently only in the upper 20s. So I pulled over and ripped off said spoiler, and resumed trip at same speed, same flatness of road. Without spoiler, it read OVER 30 MPG, and consistently as I experienced before; 33-35 MPG!!! Plus, one stretch of the two-lane road, there was a line of slow vehicles, and backing off to 60 MPH, my MPG approached 40 MPG!