The Ram 2500, more than other heavy-duty trucks, is very stiff when driven without a payload in the bed. Choosing this work truck over the regular 1500 lets you opt for the 6.7-liter Cummins turbodiesel six-cylinder. It is noisy but pulls strongly. The six-speed automatic doesn't shift smoothly. Handling is clumsy, and the high step-in makes cabin access difficult. Chrysler's powerful 383-hp, 5.7-liter V8 is the standard engine. The crew cab's rear seat is very roomy. Reliability of the turbodiesel version is well below average.