Peterbilt revealed the all-new medium duty Model 535 and Model 536, designed for the Class 5/6 non-CDL lease and rental markets. Working from a clean sheet of paper, Peterbilt designers and engineers have developed a truck designed for maximum efficiency and versatility. The five-year project involved talking directly to customers to fully understand their needs. The all-new Model 535 and Model 536 deliver the highest level of quality customers have come to expect from Peterbilt.