Engine

Powerful and dependable, the U45S's diesel engine delivers superior horsepower and performance. It offers low noise and vibration levels, exceptional fuel efficiency, and complies with the EPA's 2008 interim Tier IV emissions regulations.
 
Auto Idle System
 
Kubota’s Auto Idle System improves safety, decreases noise, and reduces fuel consumption by approximately 10%. The engine automatically decelerates to idling speed four seconds after the control levers are returned to their neutral positions. When a control lever is subsequently moved, the engine speed automatically returns to its prior setting. A simple twist of the Dial Accelerator smoothly coordinates speed and tachometer settings.