The CRD is a 2.8 I4 Diesel turbo engine, and can have the same gears as the 2.4 I4. The CRD is 200lbs heavier than the 2.4 Gas engine, and has 160HP. They were only available in 2005 and 2006 in the sport or limited? As usual, the GOVERNMENT put the stop to them, they were discontinued because of stricter 2007 United States diesel emission standards. Maine, Vermont, Massachusetts, New York, and California had already banned sales of the CRD due to their rigid state emissions regulations. A 3.0L CRD engine, which is based on the Mercedes "BlueTec" design, and that is still in production for the Jeep Grand Cherokee.
They list a 2.5 CRD with the same HP rating as the 2.8 for the Liberty, were they used somewhere else?