If this is for a racing game, then the polycount is okay. If this is for Battlefield, you're way over budget. You shouldn't extrude the 3 trims around the windshield: just use a single slanted loop and use normal maps. Same goes for the tire threads. And most definitely the same goes for all the tiny screws on the lights, hinges etc.
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edit: Wait, you're just showing us the high poly right now, right? If so, why are you telling us the poly count?
You cloud easily transfer smaller details (like tires), to normal/height map and use tessellation to popup them.
I really don't have much to add expect I can't see where are those triangles come from (;.