What type of diesel fuel does the Jeep Liberty Diesel use?
The Liberty diesel’s fuel is almost entirely free of sulfur and aromatics, is biodegradable and non-toxic. While more than 1,000 petroleum distributors carry the fuel and some 300 filling stations retail various blends of biodiesel, concerns for clean diesel-fueled vehicles center around the infrastructure for fueling, and the small number of models available currently in the U.S.

What type of fuel economy can we expect from the Jeep Liberty Diesel?
DaimlerChrysler engineers expect four-cylinder performance with V6 power and torque.

Is the Jeep Liberty Diesel more noisy than the gasoline version? Yes, because the diesel engine makes more noise. Jeep recognized that the engine was primarily responsible for unwanted buzzing and rattling, and therefore has added features to quiet the new mill. A noise-reducing engine cover, balancing shafts, an air induction resonator, and a torque converter turbine damper all contribute to quieter operation overall.