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Learn more about the DD15™

Heart-Pounding Performance

A new design offers a torque peak as low as 1,100 RPM. You’ll treat on-ramps like drag strips. With up to 50 free HP, the thrill of the road is back. Floor It.

Find a Dealer

The revolutionary DD15 can’t be described, only driven. It’ll push you back into your seat. So get into your local Freightliner or Sterling dealer and re-discover the fun of driving.

70 Years of Reliability

You get Detroit Diesel’s renowned reliability, plus an over-performing parts and service network. The game-changing DD15 is the ultimate workhorse. Meet a Hard Working Engine.

Up to 5% Better Fuel Economy

Compared to the Series 60, which has legendary fuel economy, the DD15 runs up to 5% more miles per gallon. Cut Fuel Costs.

Detroit Diesel