For the first time in over 50 years, Jeep puts a diesel engine in its most capable vehicle (in the US, Europe has had a smaller one for years). With impressive fuel economy and 442 lb-ft of torque available at 1,400 RPM, the 3-liter EcoDiesel and Wrangler are like chocolate and peanut butter. They go great together. Tom Voelk takes it on and off-road in Utah near Zion National Park. Travel and lodging were provided by FCA.