Yellow spots in spring

[Rick]

Those little small yellow dots are bug dookie. I've watched them do it while sitting there polishing on my car.

[2000]

my fault guys,
we get that pollen on our cars and than a rain and the dust piles up in the water beads and it leaves yellow spots, but I can see you've got it worst.

[darkhorse]

Here in Virginia my black mustang turns nearly yellow. I just spent a week in SD on business and noticed this on just about every car.
It is pollen and there isn't jack you can do about it except stay on top of cleaning it off or not letting your car out of the garage for another month or so. Humming bird droppings??? ROFLMAO!!

Use a duster and some QD every day and you should be golden, no pun intended

[oldmodman]

Your not going to believe it, but it's Hummingbird droppings.
See, I told you you wouldn't believe it!
I was out in my backyard, had just finished washing down my driveway, and got one right on my arm. And a Hummingbird had just flown right at me. It's a tiny yellow oblong spot about as big as a pencil lead and about 1/8 inch long. Until it happened to me I didn't know what that stuff on my car was either. Now it's entirely possible that your spots might be pollen but that one time I knew what it was for sure.

[TeCKis300]

Same here...I don't park anywhere near a tree. It definitly is not dust...to big to be a type of dust. And probably too big to be a drop of pollen?

[2000]

I believe its pollen or one of those types of dust.

[Marc Hufnagel]

I'd like to know too, since it can appear on my car(s) when sitting out in the open, nowhere near any trees..

[TeCKis300]

I'm not sure it's something that occurs everywhere, but here in San Diego, every spring, all the cars here seem to get these yellow spots. Looks like a small drop of mustard. Anyone have an idea what causes this? They only occur on the horizontal surfaces so it seems to be dropped out of the environment. I'll see if I can't get a picture up later.