Nearly every staffer that has worked at Jp has owned a four-cylinder Wrangler at some point. Both the early (’97-’02) 2.5L and late (’03-’06) DOHC 2.4L engines are pretty reliable but feel painfully underpowered. If you add lots of weight and oversized tires, it only gets worse. If you have high expectations of driving on the freeway and using any sort of overdrive gear, skip the four-cylinder. Also, if you think that you can just swap in an inline-six for cheap later down the road, think again. You’ll have just as much time, and nearly as much money, as laying down for a V-8. For our money, we’d hold out for the 4.0L inline-six engine.