Does the rear spoiler on the XB help keep the rear window clean or is it aesthetics only?

Thanks

 

Mostly aesthetics but I have noticed the window stays a little cleaner. With Rain-X, the water streams down a little better. I am not sure how an un-Rain-X'd window performs.

Moved to DC.

 

My dh noticed this last night. It did seem to keep the window cleaner.

 

We have 2 2005 xBs, one with the spoiler and one without. If you look at the side of the spoiler which faces the back hatch and roof, it is concave rounded. When the air hits the bottom of the spoiler, the air is directed downward thus pushing much of the rain and road dirt away. This of course, does not work well when driving at less than highway speeds. It does help keep the rear window somewhat more dry. The wiper, on the other hand, is virtually worthless. The spring tension is vey weak, probably due to a very small motor that can't push much more force than it does.

 

When it comes to dust and dirt it makes it stay farther away from the window because of air flow so it should stay cleaner.

 

a LITTLE bit. and i have a fab spoiler.

 

>Does the rear spoiler on the XB help keep the rear window clean

That's what I told my wife when I ordered it!