- C15 Cat – the C15 and C16 Caterpillar diesel engines were workhorses. ...
- C16 Cat.
- 60 Series Detroit – These Detroit engines are the only 'newer' diesel engine in the best semi truck engines. ...
- DD 15.
What is the most popular semi truck brand?
- #1. Freightliner—by Daimler Trucks North America. Also the owner of the Western Star brand, Daimler's Freightliner is the most popular brand of semi-truck in the United States. ...
- #2. International—by Navistar. ...
- #3. PACCAR. ...
- #4. Volvo.