To find a more precise estimate, you need to know the specific engine size (e.g., 2.4L, 3.1L, 3.8L) and whether it had an automatic or manual transmission. Once you have that information, you can search online (e.g., using Google or a vehicle specification website) for the EPA estimated fuel economy for that specific configuration. Keep in mind that the EPA estimates are optimistic; actual mileage is often lower.
