Well it sucks dirt up from the road to the rear window! With our cold weather when the HHR is driving down the road you can see that white cloud get sucked up ther ear end of the car due to pressure differental I assume. Does that happen to those with a spoiler? Sucks when you wash the HHR to see the my rear end get dirty that fast :) Sucks having a dirty rear :)
But is a spoiler worth it? Will it cut down the effect?

Thanks

 

They all do it. Spoiler or not.

 

I have the same issue, but I have not noticed any difference on any of the spoiler HHR's here in town

 

I wasnt sure if a spoiler would help.. Thanks for the replies you save me some $$ . For now that is :)

 

Spoiler doesnt help. Best thing to do is wax often and light washes lol

 

Do what I do ....

Get yourself an electric pressure washer to blast the rear and other dirt collecting areas on demand and also before you hand wash.

SF

 

We have a 3 Phase Pressuer washer at the shop they wash the Oil Trucks :) so I dont have to buy 1 :) I wash once or twice a week,, Nice having a garage I can use :)

 

Its the box shape of the car, I have a Ford Expedition that has the same issue.

 

Anything with a flat-ish rear does this..

Only drive in reverse

 

So thats why my rear end gets dirty it flat lol