Europe dirt color?

Dirt may have many colors, but the big feature is very low saturation.  Look at some tutorials on color, so you understand difference between tint and saturation or color and saturation. Google "color wheel." Many paints are quite saturated, and you need to develop skills in mixing paint to reduce saturation for things like dirt and cloth.

Also, dry dirt is very flat, while wet dirt can be a little more glossy.

Yep, there is a lot of variety. Where i live in UK we have a heavy clay soil, but not far away it is more sandy. Given its a Jeep, i am guessing you are thinking of Western Europe.

Unless i am doing a scene set some where that is known for a certain type of soil, such as the black soil in Russia, i tend for go for a generic brownish colour and alter to allow for weather conditions as Pawel suggested.

Hello!

There's no simple answer for that - Europe is no small place and we've got different types of soils, depending on where you are. You've got countryside where you either have good, fertile soil that tends to be black, or sandy ground in the forests that is a bit yellowish. In the cities and on hard roads you've got gray dust. Fresh mud also frequently tends to be brown in colour - but usually not reddish, just brown. So maybe your best bet would be to mix some gray and brown in different ratios and do some colour variation, keepeing in mind that dry mud would be lighter and more gray than wet mud that's more brown and darker. The general impression here is probably more important than the exact shade. Good luck with your build and have a nice day

Paweł