* Engine size: The 1988 Jeep Wrangler came with different engine options (e.g., 2.5L four-cylinder, 4.2L six-cylinder). The smaller engine generally gets better gas mileage.
* Transmission: Automatic or manual transmissions affect fuel efficiency.
* Condition of the vehicle: A well-maintained vehicle will typically get better gas mileage than one that is poorly maintained.
* Driving style: Aggressive driving significantly reduces fuel economy.
* Terrain: Off-road driving dramatically lowers fuel economy compared to highway driving.
Therefore, there's no single answer to your question. You might find EPA estimates for specific engine/transmission combinations from that year, but real-world mileage will likely be lower. Expect somewhere in the range of 12-18 mpg (miles per gallon), but it could be considerably less under certain conditions. For a more precise estimate, you'd need to specify the engine and transmission of the particular Jeep Wrangler.
