13 of the Worst Bulldozers Still Crawling Around in 2025

13. Komatsu D51PXi-24

Built for precision, this Komatsu model tries to be high-tech, but the user interface is clunky and confusing. Hydrostatic transmission sounds cool---until it doesn't work properly.

Many operators feel like the controls are too jumpy or too slow---never just right. And when you're doing delicate grading, that's a dealbreaker.