Test Drive: Paccar unveils 12-speed automated transmission

Paccar is the latest North American truck manufacturer to bring a proprietary automated transmission to market. Called the Paccar Automated Transmission, it's a 12-speed, twin countershaft design that was conceived as an automated transmission, which is to say, it was designed that way. It's not a manual box fitted with add-on shift-actuators. Paccar says it's the lightest automated transmission currently in production. At just 657 pounds, it is nearly 200 pounds lighter than Eaton's Advantage AMT. The addition of the automated transmission completes Paccar's goal of having a fully integrated proprietary powertrain. Paccar says its new transmission has been performance-optimized for MX-series engines and the new 40,000-pound drive axles unveiled in October 2016.