* Engine size: The 1997 Wrangler came with a few different engine options (a 4.0L 6-cylinder was common, but there were others). Larger engines generally get worse gas mileage.
* Transmission: Automatic or manual transmission also affects fuel economy. Manual transmissions typically offer slightly better mileage.
* Driving conditions: City driving yields lower mpg than highway driving. Terrain (off-roading significantly reduces mileage), speed, and even weather conditions play a role.
* Vehicle condition: Proper maintenance (like properly inflated tires) impacts fuel economy.
Therefore, there's no single answer. However, you can expect a range of 13-17 mpg overall for a 1997 Jeep Wrangler, with highway mileage potentially reaching the higher end of that range and city driving at the lower end. This is just an estimate, and your actual mileage may vary considerably.
