Posted: June 13, 2016 in Kenworth

In 2005 automatic and automated transmissions were sold in about 10% of class 8 trucks and tractors.  Current usage of these types of transmissions varies at different manufacturers and ranges from approximately 80% at Volvo down to 33% at Navistar.  Highway tractors rank highest in usage percentage, with vocational trucks and tractors slowly catching up as improved models are introduced that work well in these applications.  Mack, Volvo, Freightliner, and Western Star have proprietary transmissions and also offer Allison and Eaton models.  Kenworth, Peterbilt, and Navistar offer Allison and Eaton brands.


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