* Specific Wrangler model: Two-door, four-door, Unlimited, etc. Each body style has a slightly different shape and thus a different drag coefficient.
* Modifications: A lift kit, larger tires, added accessories (like a roof rack or winch) all significantly alter the aerodynamics and therefore the Cd.
* Testing conditions: The Cd is determined in a wind tunnel under specific conditions; variations in these conditions lead to slight differences in the reported value.
While you won't find a precise number readily available, you can expect the drag coefficient of a stock 2004 Jeep Wrangler to be relatively high compared to a modern, aerodynamic vehicle. Estimates often place it in the range of 0.5 to 0.6, but this is just a broad approximation. You'll be unlikely to find more precise data published by Jeep.
