I like this model a lot. tf2 needs vehicles, and the more - the better!
Jeeps could fit many of the tf2 themes great- swamps, deserts, or Egyptian ruins.
I can give you a few suggestions if you're planning on updating this:
The grill on this jeep looks wierd. Your jeep is based of a world war 2 era Willys jeep. The grill on these things is "flat" at the top, while yours is pointy. IMO that looks really wrong, and should be an easy fix.
Besides, the grill is just a cover for the radiator, which is behind it. Thus, I feel like the grill in the model should be "caved in", either in the actual model, or using a bumpmap.
Also, the lights on your model look underdetailed. I'd go for the style featured on the hydro truck lights:
I think you can also increase the number of polys on the lights, especially the lights on top of the fenders. They don't look round enough IMO.