Possible condensation issue ?

It's not suppose to have moisture inside the light housing. The very shiny reflective surface will eventually be damaged by the moisture. You should try to dry it out. Check the rubber dust boot for deterioration replace if needed, repair any cracks along seams as well as penetrating cracks.

 

While that is true and a careful inspection would be good.....it is not an unusual condition across a lot of different cars.
You can sometimes get rid of it (temporarily) by leaving the car sit out in the direct sun while facing south or southwest for a day or two.

Driving with the low beams ON for a few hours might help too.

Then if it comes back you can investigate further.

 

How many miles on your 2008?

Be aware alot of G2's are bad engine oil eaters. It requires vigilant and routine checking of the engine oil dipstick preferably first thing in the AM before starting the car. Keep the oil at the full line.

If you are not aware of your car's bad habits and you run the engine so low on oil a check engine light comes on usually that's too late and engine damage occurs. Hundreds of posts about that on this site.

Its very easy to make sure that doesn't happen.

 

Someone mentioned drilling a small hole, on a back corner of the headlight somewhere, inside the engine bay, and the moisture cleared up. Maybe NOT at the very low point, water on the outside might wick in. It's just to allow the trapped moisture to vent.

 

Also if you pilot hole it, you can always place tape, caulking or the like over the hole to prevent that hole from being the leak source.

But if you don’t find the cause, the moisture will recur, leading to the same activity again.

But a vent hole would help evacuate what’s in there.

 

See my post above.

While I wouldn’t worry about it, I’d still try to figure out where the seal is compromised .

Good luck and keep us posted .