We just bought a Mazda5 GT 2009, and the rear backglass is always dirty, even when the road is dry! Imagine when it's snowing or raining... we have to over use the wiper and that take a lot of windshield washer.

Does it exist something that could avoid having all that dirt sticking to the backglass, like a wind deflector, even if we have the GT model with the rear roof spoiler?

Another thing, for what we don't have aswitchthat turn on all inside lights?

Thanks.

 

I've treated my rear and side windows with a Rain-X equivalent.
It helps.

 

Mud flaps. Got to have mud flaps.

 

Wow, what a unique and logical idea! Mud flaps help keep dirt and crude raising up! I have a Mazda 6 Wagon, and my rear window gets dirty. I have a rear spoiler.

 

careful on the flaps. make sure your don't poke holes to install them, else you'll have rust issues!

 

I'm not going to bother with them now anyway, i have some moulded plastic shorties in front, not worried about rears yet.

 

RainX is awesome. Use it all the time on the windshield. Works great. Never thought of trying on the back window, but I am sure it will work well! I'll try it tomorrow!!