Peterbilt 389 Discontinued 2024 Release Date. The company detailed the exterior and interior features of the 389x: If you’re an avid fan of peterbilt, you would have noticed that each model lasts for 20 years before a new model replaces the older one.

Peterbilt tuesday night sent its model 389 off in style, officially introducing the model 589 at a customer, dealer and media event that, fittingly, included a pride & class truck show with 200. It promises to be the ultimate reward and premium work truck while.